issue #2334, Update the SDK of ND91 to newest version.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
closed #2334, Add user login & logout functions in plugin nd91.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Merge pull request #3015 from natural-law/develop

closed #2334: Add user login & logout functions in plugin nd91.