Fixed a bug of cc.TMXLayer that its position is incorrect when its layerOrientation is TMX_ORIENTATION_HEX
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into develop
Merge pull request #2389 from dingpinglv/develop

Fixed a bug of cc.TMXLayer that its position is incorrect when its layerOrientation is TMX_ORIENTATION_HEX