Merge pull request #2386 from pandamicro/develop

Update engine version
Fixed a bug of cc.LabelAtlas that its 'color' property doesn't work.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into develop
Merge pull request #2387 from dingpinglv/develop

Fixed a bug of cc.LabelAtlas that its 'color' property doesn't work.
Fixed a bug of Sprite that it draws incorrect without texture.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into develop
Merge pull request #2388 from dingpinglv/develop

Fixed a bug of Sprite that it draws incorrect without texture.
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
Update the authors and fixed a bug of cc.Node's addChild
Merge pull request #2390 from dingpinglv/develop

Update the authors and fixed a bug of cc.Node's addChild
Fixed a bug of cc.Node's addChild
Merge pull request #2391 from dingpinglv/develop

Fixed a bug of cc.Node's addChild
fix the arguments bug
Strengthening the judgement
Merge pull request #2392 from joshuastray/ccui_bug

fix the arguments bug
Merge pull request #2396 from VisualSJ/develop-rc

Strengthening the judgement(Reader)
Fixed a bug of renderer that its cache functions doesn't work when a renderTexture has an other renderTexture
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into develop