Refactor #4290: Resolve bug of PhysicsSprite
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Issue #4294: Remove cc.c4f, cc.c3b, cc.c4b
Issue #4294: Add clear functions in ccs singletons
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Merge pull request #56 from pandamicro/master

Issue #4294: Resolve bugs