Called whenever the project has changed.

	// Simple Editor Script that makes Unity Sync with MonoDevelop each time
	// there is a change in the Hierarchy or the Project view.
	
	class ForceSync extends EditorWindow {
	
		@MenuItem("Example/ForceSync When project changes")
		static function Init() {
			var window : ForceSync = EditorWindow.GetWindowWithRect(ForceSync, Rect(0,0,100, 100));
			window.Show();
		}
		function OnGUI() {
			if(GUILayout.Button("Sync now!"))
				EditorApplication.ExecuteMenuItem("Assets/Sync MonoDevelop Project");
		}
		function OnHierarchyChange() {
			EditorApplication.ExecuteMenuItem("Assets/Sync MonoDevelop Project");
			Debug.Log("Sync");
		}
		function OnProjectChange() {
			EditorApplication.ExecuteMenuItem("Assets/Sync MonoDevelop Project");
			Debug.Log("Sync");
		}
	}