fixed #2144 fixed a bug of cc.TextureCache that textureKeyName should be full path when textureForKey
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2144_RewriteParticleBatchNode
Merge pull request #937 from dingpinglv/Iss2141_textureKeyName

fixed #2144 fixed a bug of cc.TextureCache that textureKeyName should be full path when textureForKey