A BALANCE BACKPACK FOR IMPROVED WEIGHT DISTRIBUTION AND POSTURE FIELD OF THE INVENTION [0001] The present invention relates generally to backpacks but more particularly to a balance backpack that distributes weight more efficiently and improves posture. DESCRIPTION OF RELATED ART [0002] Backpack, knapsack, pack, packsack, rucksack and other names they go by have been around in one form or another for hundreds of years. Over the years, as the needs of people changed, so did the size, shape, fabric and function of backpacks. A lot of backpacks these days cater to the needs of school children, university students, office workers, travelers, executives and vary in material from canvas, cotton, nylon, hemp, jute, pvc, silicone, leather etc. Because of the variety of intended users, backpack manufacturers juggle between materials, the right combination of pockets, theft safety, size, function and durability that their targeted user will find the most useful. One factor that has been given little attention to is the balance and how it impacts the posture of the intended user. There hence exists a need for an improved backpack for weight distribution and posture. BRIEF SUMMARY OF THE INVENTION [0003] The following presents a simplified summary of some embodiments of the invention in order to provide a basic understanding of the invention. This summary is not an extensive overview of the invention. It is not intended to identify key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some embodiments of the invention in a simplified form as a prelude to the more detailed description that is presented later. [0004] It is a main object of the present disclosure to provide for a backpack that comprises of at least one split partition which can be partially (or fully) detached from the main backpack and moved to the front chest and stomach area of the intended user. This splits the weight of the contents of the backpack and the partition in front pulls on the weight of the rear backpack via the shoulder straps using the shoulders as a pivot point, thereby further reducing the weight on the intended user’s back such that the intended user can maintain an upright posture with minimal stress on the back and shoulder muscles. [0005] In order to do so the balance backpack converts from a regular rear loaded backpack into a balanced back and front backpack by having a main pack and at least one front pack releasably attached thereto. A connecting strap from a shoulder strap of the main pack connects to a slide rail at a top end of the front pack. The connecting strap having one end attaching to a swivel and flip buckle which is affixed to the shoulder strap of the main pack and the opposite end of the connecting strap being attached via a means of attachment to one end of the slide rail. [0006] In a preferred embodiment, the slide rail being shaped angularly upwards at each end similar to cat’s ears so as to provide a non-slip nook for the ring clip and a slide rail means of attachment and means of top end attachment to position themselves. [0007] In an alternate embodiment, the slide rail being a track with a slider to which one end of the connecting strap can be releasably or fixedly attached. [0008] In an alternate embodiment, the shape of the slide rail is rectilinear from end to end. [0009] In yet another embodiment, the shape of the slide rail is generally rectilinear with both ends curved. [0010] In yet another embodiment, the swivel and flip buckle is configured to allow the connecting strap and the front pack to flip vertically via a fixed axle to the front of the intended user. [0011] In still another embodiment, the swivel and flip buckle is configured to allow the connecting strap and the front pack to rotate horizontally, via a rotatable wheel mechanism rotatable axle, to the front of the intended user. [0012] In still another embodiment, the connecting strap is releasably attached to the swivel and flip buckle. [0013] In yet another embodiment, the connecting strap is fixedly attached to the swivel and flip buckle. [0014] In another embodiment, an anti-theft feature is enabled by having the ring clip of the connecting strap remaining on the same end of the slide rail such that an openable compartment located on the outer side of the front pack is pressing against the intended user’s chest and the inner surface of the front pack now being the side facing outwards. The front pack still supported by the connecting strap from one shoulder strap and the opposite top end of the front pack supported via a means of top end attachment provided on the front of the opposite shoulder strap and attached to the opposite end of the slide rail. [0015] In another embodiment, the front pack being secured to the intended user via adjustable side straps having side release buckles. [0016] In another embodiment, the front pack is fully detachable from the main pack to be used as a stand alone sling bag by detaching it from the swivel and flip buckle. The connecting strap extensible to fit cross-wise across the intended user’s body and removably attachable to an opposite corner ring buckle provided at a bottom end of the front pack. [0017] In yet another embodiment, the front pack is additionally supported by hook and loop patches provided on the outer surface of the main pack and the inner surface of the front pack. [0018] In another embodiment, circular buckle is attached to the shoulder strap of the main pack to which the connecting strap is attached thereto, allowing the front pack to be flipped over vertically. [0019] In another embodiment, a circular buckle is attached to the shoulder strap of the main pack to which the connecting strap is attached thereto, allowing the front pack to be swiveled over horizontally. [0020] In another embodiment where the front pack can be attached to standard backpacks, the swivel and flip buckle comprising a spring-clamp mechanism which allows the swivel and flip buckle to be detached along with the front pack and connecting strap, The spring/clamp mechanism along with a spring-clamp type clasp which is attachable to the opposite side of the slide rail or to the ring buckle allows the front pack to be affixed to regular backpacks and flipped over or swiveled across. The spring-clamp type clasp can be attached to the opposite shoulder strap when the front pack is in front of the intended user or affixed directly to the main backpack when worn behind the intended user. [0021] The balance backpack has a method of conversion from a regular rear loaded backpack into a balanced back and front backpack consisting in the steps of: [0022] a) Prior to putting on the balance backpack, the intended user unclasps the front pack from the main pack by using the slide rail means of attachment. [0023] b) The intended user then flips the front pack vertically to the front of the intended user either before wearing the main pack or pulling it vertically across ones shoulders after wearing the main pack. [0024] c) The front pack -- now attached by means of the connecting strap to one end of the slide rail -- is releasably attached at the other end of the slide rail to the means of top end attachment provided on the front of the opposite shoulder strap. [0025] d)The connecting strap and the releasable attached means are both adjustable so as to position the front pack about the intended users front. [0026] e) Adjustable side straps on both sides of the main pack are releasably attached to side release buckles on the front pack so as to hold the front pack and main pack firmly about the intended user’s midriff / waist. [0027] The balance backpack has an alternate method of conversion from a regular rear loaded backpack into a balanced back and front backpack consisting in the steps of: [0028] a) The front pack swiveled horizontally to the front of the intended user by unclasping the front pack from the main pack using the slide rail means of attachment before wearing the balanced backpack on the intended user’s shoulders. [0029] b) Swiveling the front pack horizontally across one side of the intended user to the front of the intended user. [0030] c) The connecting strap from one shoulder strap slides across the slide rail to hold the front pack at one end of the slide rail and the other end of the slide rail is attached via means of top end attachment. [0031] d) Adjustable side straps on both sides of the main pack are releasably attached to side release buckles on the front pack so as to hold the front pack and main pack firmly about the intended user’s midriff / waist. [0032] The foregoing has outlined rather broadly the more pertinent and important features of the present disclosure so that the detailed description of the invention that follows may be better understood and so that the present contribution to the art can be more fully appreciated. Additional features of the invention will be described hereinafter which form the subject of the claims of the invention. It should be appreciated by those skilled in the art that the conception and the disclosed specific methods and structures may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should be realized by those skilled in the art that such equivalent structures do not depart from the spirit and scope of the invention as set forth in the appended claims. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS [0033] Other features and advantages of the present invention will become apparent when the following detailed description is read in conjunction with the accompanying drawings, in which: [0034] FIGS. 1 A-C is a front view showing the invention with front and main pack together as one unit, a front view of the main pack with front pack being flipped over and a front view of the main pack with front pack being swiveled over sideways. [0035] FIGS. 2A-C is a side view of the invention with front pack flipped/slid across to the front, a view of the front pack flipped over and a view of the backpack with front pack slid over sideways. [0036] FIG. 3A-B is a side view of an intended user wearing the invention on his back as a combined front and main pack and a side view of the intended user wearing a split backpack with front pack slid/flipped to the front of the intended user. [0037] FIG. 4A-B are top views of the swivel and flip buckle showing a portion of the connecting strap being able to flip 180 degrees vertically on an axle. [0038] FIG.4C is a side cutaway view of the swivel and flip buckle. [0039] FIG. 4D-F are top views of the swivel and flip buckle showing a portion of the connecting strap being able to rotate about on an axle via a wheel mechanism. [0040] FIG.5A-B is a side view of a spring/clamp type swivel and flip buckle and a side view of a spring/clamp type adjustable lobster clasp. [0041] FIG.6A-C is an isometric view favoring the top of the front pack with a cat’s ear shaped slide rail, a track and slider based slide rail and a straight slide rail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0042] The following description is provided to enable any person skilled in the art to make and use the invention and sets forth the best modes contemplated by the inventor of carrying out his invention. Various modifications, however, will remain readily apparent to those skilled in the art, since the general principles of the present invention have been defined herein. [0043] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms "a" or "an," as used herein, are defined as to mean “at least one”. The term "plurality," as used herein, is defined as two or more. The term "another," as used herein, is defined as at least a second or more. The terms "including" and/or "having," as used herein, are defined as comprising (i.e., open language). The term "coupled," as used herein, is defined as connected, although not necessarily directly, not necessarily mechanically, and not permanent. The term "providing" is defined herein in its broadest sense, e.g., bringing/coming into physical existence, making available, and/or supplying to someone or something, in whole or in multiple parts at once or over a period of time. As used herein, the terms "about", “generally”, or "approximately" apply to all numeric values, whether or not explicitly indicated. These terms generally refer to a range of numbers that one of skill in the art would consider near the stated amount by about 0%, 5%, or 10%, including increments therein. In many instances these terms may include numbers that are rounded to the nearest significant figure. [0044] Referring now to any of the accompanying FIGS 1 and 2, there is provided a balance backpack (10) having at least one detachable partition henceforth referred to as a front pack (12) and wherein such front pack (12) is attached to a main pack (14) by means of a connecting strap (16) extending integrally from a shoulder strap (18) of the main pack (14) at one end, to a slide rail (36, 36’, 36’’) at its opposite end. The slide rail (36) in one embodiment is shaped similarly to a cat’s ears angularly upwards at each end so as to provide a non-slip nook for a ring clip (34) (see FIG.6A), in another embodiment the slide rail (36’) is a track with slider (see FIG.6B) and in yet another embodiment, the slide rail (36’’) is a straight rail (See FIG.6C). In all three embodiments the slide rail (36, 36’, 36’’) can have the option to be made recessed within the top of the front pack (12) or extend upwards as shown in figures 6A, 6B and 6C. The slide rail (36, 36’, 36’’) is located on the top portion of the front pack (12) and the connecting strap (16) is attached to the slide rail (36, 36’, 36’’) by means of attachment such as the ring clip (34) or a lobster clasp (19), as non-limiting examples, (see FIG.1B) or via a combination of the ring clip (34) and the lobster clasp (19), as non-limiting examples, (see FIG.6C). The front pack (12) is releasably attached to the main pack (14) by way of a slide rail means of attachment (20) (see FIG.1C) such as a lobster clasp, bolt snap or carabiner clip, as non-limiting examples to the other end of the slide rail (36, 36’’). Alternatively the slide rail means of attachment (20) can be releasably attached to a ring buckle (42) located at the top portion of the front pack (12) for an adjusted positioning of the front pack (12) when desired and in the case of the embodiment of the slide rail (36’) as a track with slider (see FIG.6B) . The front pack (12) when placed on the main pack (14) is additionally held in place by a front pack means for holding (22) such as hook and loop patches, or snap fasteners, as non-limiting examples and which are located on a front surface (24) of the main pack (14) and a rear surface (26) of the front pack (12). The main pack (14) and front pack (12) each have at least one openable compartment (11) and (13) respectively. [0045] The connecting strap (16) attaches to a swivel and flip buckle (28) at an end which is affixed to the shoulder strap (18) of the main pack (14). The other end of the connecting strap (16) is attached via the ring clip (34) to one end of the slide rail (36, 36’, 36’’) affixed to the top of the front pack (12). [0046] The swivel and flip buckle (28) allows the connecting strap (16) and front pack (12) to flip vertically via a fixed or rotatable axle (30) to the front of the intended user (44) (see FIGS.4A, 4B) or alternatively rotate horizontally via a rotatable wheel mechanism (32), (see FIGS.4D, 4E & 4F) to the front of the intended user (44). [0047] When the front pack (12) is flipped vertically over to the front of the intended user (44), the ring clip (34) of the connecting strap (16) remains on the same end of the slide rail (36, 36’, 36’’) and an openable compartment (15) which is on the outer side of the front pack (14) now presses against the intended user (44) and becomes inaccessible from theft. The inner surface (26) of the front pack (14) now becomes the side facing outwards. The front pack (12) continues to be supported by the connecting strap (16) from one shoulder strap (18) and the opposite top end of the front pack (12) is supported via means of a top end attachment (21) provided on the front of an opposite shoulder strap (18’) and attached to the opposite end of the slide rail (36, 36’’) or alternatively to the ring buckle (42). [0048] The front pack (12) can alternatively be swiveled over the side or shoulder and to the front of the intended user (44) by unclasping the slide rail means of attachment (20) and rotating the front pack (12) horizontally about the swivel and flip buckle (28) such that the outer face of the front pack (12) and openable compartment (15) face outward from the front of the intended user (44). The ring clip (34) slides over to the other end of the slide rail (36, 36’, 36”) and is supported in the frontal position by the connecting strap (16) on one end and the other top end of the front pack (12) is held by the means of top end attachment (21) provided on the front of the opposite shoulder strap (18’) attaching to the opposite end of the slide rail (36, 36’’) or to the ring buckle (42’). Additionally the front pack (12) is secured firmly to the intended user (44) via adjustable side straps (46) having side release buckles (48). Figures 1B and 1C show a main pack (14) with a second openable compartment (17). [0049] In an alternate embodiment of the backpack (10) (see Fig.1A, 1C) instead of the swivel and flip buckle (28) (see Fig.1B), a circular buckle (38) is attached to the shoulder strap (18) of the main pack (14) to which the connecting strap (16) is attached thereto, allowing a similar flip and swivel function as described hereinabove. [0050] In yet another alternate version of a swivel and flip buckle (28’) (see Fig.5A) comprises a spring-clamp mechanism (31) which allows the swivel and flip buckle (28’) to be detached along with the front pack (12) and connecting strap (16). The spring/clamp mechanism (31) along with a spring-clamp type clasp (50) which is attachable to the opposite side of the slide rail (36) or to the ring buckle (42) allows the front pack (12) to be affixed to most types of backpacks and flipped over or swiveled across. The spring-clamp type clasp (50) can be attached to the opposite shoulder strap (18’) when the front pack (12) is in front of the intended user (44) or affixed directly to the main backpack (14) when worn behind the intended user (44). [0051] A major advantage of the backpack (10) is its ability to transfer weight to the front of the intended user (44) so as to lessen the load on the intended user’s (44) back. Additionally the front pack (12) pulls on the shoulder straps (18, 18”) so as to utilize the intended user’s (44) shoulders as a pivot point and further balance and reduce the overall load on the intended user’s (44) back and shoulder muscles. [0052] The backpack (10), in a version where the front pack (12) is non-detachable, ensures that the front pack (12) is not misplaced or separated inadvertently as in the need case of a child’s school backpack (see FIG.1A). [0053] The backpack (10), in an alternate embodiment wherein the front pack (12) is detachable (see FIG.1C) is removably attached to flip and swivel buckles (28, 38) by means of a lobster clasp (19’) and can be detached to be used as a standalone bag where the connecting strap (16) is extensible and is pulled cross-wise across the intended user’s (44) body to be removably attached to an opposite corner ring buckle (41) (See FIG.1B) at the bottom corner of the front pack (12) via the lobster clasp (19’). [0054] In alternate embodiments, the invention (10) can have more than one detachable front pack (12) wherein additional packs (not shown) sit between the front pack (12) and the main pack (14) and can be moved over to the front of the intended user (44) either vertically or horizontally before or after moving the front pack (12) to the front of the intended user (44). [0055] The balance backpack (10) is converted from a regular rear loaded backpack into a balanced back and front backpack by way of the method consisting in the steps of: [0056] a) Prior to putting on the balance backpack (10), the intended user (44) unclasps the front pack (12) from the main pack (14) by using the slide rail means of attachment (20). [0057] b) The intended user (44) then flipping the front pack (14) vertically to the front of the intended user (44) either before wearing the main pack (14) or pulling it vertically across ones shoulders after wearing the main pack (14). [0058] c) The front pack (12) -- now being attached by means of the connecting strap (16) to one end of the slide rail (36) -- is releasably attached at the other end of the slide rail (36) to the means of top end attachment (21) provided on the front of the opposite shoulder strap (18’). [0059] d) The connecting strap (16) and the releasable attached means (21) are both adjustable so as to position the front pack (12) about the intended users (44) front. [0060] e) Adjustable side straps (46) on both sides of the main pack (14) are releasably attached to side release buckles (48) on the front pack (12) so as to hold the front pack (12) and main pack (14) firmly about the intended user’s (44) midriff / waist. [0061] An alternate method of converting from a from a regular rear loaded backpack into a balanced back and front backpack consisting in the steps of: [0062] a) The front pack (12) swiveled horizontally to the front of the intended user (44) by unclasping the front pack (12) from the main pack (14) using the slide rail means of attachment (20) before wearing the balanced backpack (10) on the intended user’s (44) shoulders. [0063] b) Swiveling the front pack (14) horizontally across one side of the intended user (44) to the front of the intended user (44). [0064] c) The connecting strap (16) from one shoulder strap (18) slides across the slide rail (36, 36’, 36’’) to hold the front pack (12) at one end of the slide rail (36, 36’36,’’) and the other end of the slide rail (36, 36’’) or ring buckle (42’) for slide rail (36’) is attached via means of top end attachment (21). [0065] d) Adjustable side straps (46) on both sides of the main pack (14) are releasably attached to side release buckles (48) on the front pack (12) so as to hold the front pack (12) and main pack (14) firmly about the intended user’s (44) midriff / waist. [0066] In order to remove the balanced backpack (10), the hereinabove steps can be applied in reverse order. Alternately the fastening straps (44) are detached and the balanced backpack (10) is removed by unhooking the shoulder straps (18.18”) from the intended users (44) shoulders and pulling it up and over the intended users (44) head while keeping the front pack (12) still attached to releasably attached means (21). [0067] Although the invention has been described in considerable detail in language specific to structural features, it is to be understood that the invention defined in the appended claims is not necessarily limited to the specific features described. For example, the slide rail described herein above can be protruding above the top of the front pack, be on the same plane as the top of the front pack or recessed within the top of the front pack. Rather, the specific features are disclosed as exemplary preferred forms of implementing the claimed invention. Stated otherwise, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting. Therefore, while exemplary illustrative embodiments of the invention have been described, numerous variations and alternative embodiments will occur to those skilled in the art. Such variations and alternate embodiments are contemplated, and can be made without departing from the spirit and scope of the invention. [0068] It should further be noted that throughout the entire disclosure, the labels such as left, right, front, back, top, bottom, forward, reverse, clockwise, counter clockwise, cross-wise, up, down, or other similar terms such as upper, lower, aft, fore, vertical, horizontal, oblique, proximal, distal, parallel, perpendicular, transverse, longitudinal, etc. have been used for convenience purposes only and are not intended to imply any particular fixed direction or orientation. Instead, they are used to reflect relative locations and/or directions/orientations between various portions of an object. [0069] In addition, reference to “first,” “second,” “third,” and etc. members throughout the disclosure (and in particular, claims) are not used to show a serial or numerical limitation but instead are used to distinguish or identify the various members of the group.