Updated files to support changes in android-store
Removed setting of android test mode, not needed in IABv3
Removed debugging of IabHelper
Update README.md
Update README.md
submodules
Merge branch 'master' of github.com:soomla/cocos2dx-store

* 'master' of github.com:soomla/cocos2dx-store:
  Update README.md
  Added missing section about android manifest
submodules and README