title: HandleError - how do you display exception message in error page?
body: <p>I have the following on my base controller class which my other controllers inherit from:</p>
  
  <pre><code>[HandleError(ExceptionType = typeof(NotFoundException), View = "NotFound")]
  [HandleError(ExceptionType = typeof(UnauthorisedException), View = "Unauthorised")]
  </code></pre>
  
  <p>I would like to be able to add the exception message into the view.
  So for example when I throw an exception:</p>
  
  <pre><code>throw new NotFoundException("This record was not found");
  </code></pre>
  
  <p>I could somehow grab this message and insert it into the NotFound view.</p>