title: Progress ring template for BusyIndicator
body: <p>the wpf extended toolkit has a BusyIndicator control and its possible to apply a template to the progress bar contained in that control.
  i'm want the progress bar to be like the ring progress bar in win 8 (like here in code project <a href="http://www.codeproject.com/Articles/700185/Windows-Progress-Ring" rel="nofollow">http://www.codeproject.com/Articles/700185/Windows-Progress-Ring</a>) but i can't apply a control, just a DataTemplate.
  any ideas?</p>