[ci skip]CCRects converted with jsb does not create origin/size properties

When using javascript through jsb, a call to getBoundingBox() returns an object with properties x/y/height/width and not origin/size properties.
Submitted as issue [3065](http://www.cocos2d-x.org/issues/3065)
cocos2d-js-tests pull request: [231](https://github.com/cocos2d/cocos2d-js-tests/pull/231)