Adds the function to the context menu of the component.

In the inspector of the attached script. When the user selects the context menu, the function will be executed.

This is most useful for automatically setting up scene data from the script. The function has to be non-static.

	@ContextMenu ("Do Something")
	function DoSomething () {
		Debug.Log ("Perform operation");
	}

	// C# example:
	class ContextTesting : MonoBehaviour {
		/// Add a context menu named "Do Something" in the inspector
		/// of the attached script.
		[ContextMenu ("Do Something")]
		void DoSomething () {
			Debug.Log ("Perform operation");
		}
	}