MOAI iOS Playhaven integration

Example usage can be found here: http://getmoai.com/forums/ios-android-playhaven-integration-t1894/

Contributors to be included in the change log if the pull request is accepted:

* An Nguyen - for developing ALL the integration with MOAI
* Bogdan Tatarov (me) - for putting everything together to work with the latest development version, making it follow the MOAI class logic and file structure and updating the xcode project files