cocos2dx-store ready for 3.0rc0

Gets the store working with Cocos2d-x 3.0rc0.

Notes:
1. You might want to uncomment the cocos2d::log calls in JSBinding.cpp.
2. Fixes deprecations like CCDictionary -> __Dictionary, CCString -> __String, CCInteger -> __Integer, etc. Note that these will eventually be deprecated in favor of new classes. For example, __Dictionary is being replaced by Map. Since Map has a different implementation, it will require refactoring and debugging.