Compiling project with NGUI 3.0.2 for Windows 8 or Windows Phone fails:
Assets\NGUI\Scripts\Internal\EventDelegate.cs(131,23): error CS1061: 'EventDelegate.Callback' does not contain a definition for 'Method' and no extension method 'Method' accepting a first argument of type 'EventDelegate.Callback' could be found (are you missing a using directive or an assembly reference?)
