fix property anchorPoint of CCScale9Sprite 

fix property anchorPoint of CCScale9Sprite doesn't work in ccb. Because initSpriteFrame method reset anchor point
Merge branch 'patch-1' of https://github.com/zhanghaojie/cocos2d-x into iss2054-s9sp-anchorpoint-ccb
Fixed #2054: AnchorPoint property of CCScale9Sprite doesn't work in CCBReader.
Invoking init method in CCScale9Sprite::create().
Updating AUTHORS.
Merge pull request #2370 from dumganhar/iss2054-s9sp-anchorpoint-ccb

Fixed #2054: AnchorPoint property of CCScale9Sprite doesn't work in CCBReader.