fixed #1636: Refactored CCEditBox for iOS, moved the implementation of EditBoxImplIOS.h/.cpp to CCEditBoxImplIOS.h/.cpp.
fixed #1636: Deleted CC_ENABLE_CHIPMUNK_INTEGRATION and CC_ENABLE_BOX2D_INTEGRATION in ccConfig.h since they are moved to extension, it doesn't depend on engine any more.
Added platform macro for CCEditBoxImpl* files.
Merge pull request #1819 from dumganhar/gles20

fixed #1636: Refactored CCEditBox for iOS, moved the implementation of EditBoxImplIOS.h/.cpp to CCEditBoxImplIOS.h/.cpp.
Deleted CC_ENABLE_CHIPMUNK_INTEGRATION and CC_ENABLE_BOX2D_INTEGRATION in ccConfig.h since they are moved to extension, it doesn't depend on engine any more.
issue #1640: Updated js files for jsbindings
Updated the submodule reference of cocos2d-js-tests.
issue #1640: Updated jsbinding for CCPhysicsSprite .
issue #1640: Added some files to iOS Project.
issue #1639:set visible to correct value
fixed #1641: The coins in Watermelon Me fail to animate in cocos2d-x JS binding.
issue #1640: Updated the submodule reference of cocos2d-js-tests.
issue #1640: Updated ChipmunkTest.cpp.
issue #1640: Updated Box2dTest and ChipmunkTest.
Merge pull request #1820 from dumganhar/iss1640-jsb-update

fixed #1640: Added sys.capabilities support and fixed a bug in CCAnimationCache.
Merge pull request #1821 from minggo/iss1639_CCBReader

issue #1639:set visible to correct value