title: Adding BackTrace to the Hoptoad Notify method
body: <p>I have the code as shown below:</p>
  
  <pre><code> raise "Invalid destination "
  rescue Exception =&gt; e
          HoptoadNotifier.notify(:error_class =&gt; e, :error_message =&gt; "#{e} : Error occured for the user #{self.user_name}")
  </code></pre>
  
  <p>I actually want the error message to be logged in the hoptoad as <code>"Invalid destination : Error occured for the user username"</code>. The code as shown above works as intented. But im not able to get the back trace in the hoptoad. Please suggest on this.</p>