Update the JS binding for plugin
Merge branch 'master' of https://github.com/cocos2d/cocos2d-x
Merge branch 'master' of https://github.com/natural-law/cocos2d-x
Submit protocol of social share plugin
Submit twitter share plugin implement
Add HelloSocial sample
Merge pull request #1 from lihex/master

Add twitter social share plugin
Merge branch 'master' of https://github.com/natural-law/cocos2d-x
Adjust the implementation of ProtocolSocial & plugin twitter.
Modify the permission of plugin twitter.
1. Change the implementation of callback in IAP plugins.
2. Add licenses in source code files.
1. Change the implementation of callback in Social plugins.
2. Add licenses in source code files.
Add licenses in source code files.
Optimize the interface & type names in plugin.
Optimize the interfaces design in ProtocolAds.
Add licenses in source code files of HelloAds.
Merge pull request #2441 from natural-law/master

Add social protocol & plugin twitter