* Use notifications to signal switching back to Unity
* NativeInterface instance must now be allocated and initialised (removed the static Create function)
* Renamed method
* Added a time counter to guy
* Use timer to rotate instead of real time since startup
* Added remove view function
* Wrapped root view in nav controller
* Updated unity project plugin with latest lib, header, and storyboard
* Updated unity native interface code to respond to 'SwitchToUnityRequested'