Version 1.3

Version 1.3
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- Removed whitespace as suggested by @GuntisTreulands, resulting in a
smaller header file.
- The example Xcode project has been updated to include the script
changes.
- The example Xcode project has been updated to iOS 7.
- The example Xcode project has better OpenGL ES performance for iPhone
4 due to decreased depth format and no multisample (now runs at 30 FPS)
- The example Xcode project now uses gesture recognizers to transform
the model: translate XY (1-finger pan), rotate XY (2-finger pan),
rotate Z (rotation), scale XYZ (pinch).
- Resulting file reductions
-- cubeOBJ.h: 5.5 MB -> 4.6 MB
-- cubeMTL.h: 2.0 KB -> 1.0 KB
-- Total reduction is approximately 16%