fixed #2287 fixed a bug of cc.EditBox that it works wrong when called cc.EGLView.getInstance().setDesignResolutionSize()
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2287_FixEditBoxBug
Merge pull request #1020 from dingpinglv/Iss2287_FixEditBoxBug

fixed #2287 fixed a bug of cc.EditBox that it works wrong when called cc.EGLView.getInstance().setDesignResolutionSize()