Fixed #5520: Automatically handle loaded texture
Fixed #5521: Correct the rect information for initWithTexture in cc.Sprite.initWithFile function
Merge pull request #1902 from pandamicro/develop

Bug fixes
Refactor #5096: Improve performance of cc.rectIntersectsRect
Merge pull request #1904 from pandamicro/develop

Refactor #5096: Improve performance of cc.rectIntersectsRect
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss5096_Renderer
Merge pull request #1907 from VisualSJ/Renderer

Renderer
Merge branch 'Renderer' of https://github.com/cocos2d/cocos2d-html5 into Iss5096_Renderer
Issue #5096: refactor setVisible and cc.ClippingNode
Merge pull request #1908 from dingpinglv/Iss5096_Renderer

Issue #5096: refactor setVisible and cc.ClippingNode
Issue #5096: sprite flip