Initial Commit
added libpng
Merge remote-tracking branch 'origin/feature/platformer' into fix/ios
fixed type conversions
Merge remote-tracking branch 'origin/master' into feature/platformer
Merge remote-tracking branch 'origin/fix/ios' into feature/platformer
added libpng zlib sources
added polygon blengind in opengl
Merge branch 'feature/platformer'