title: Hapi.response.File on reply completion
body: <p>I'm using hapi.js as my api framework, and I've got a scenario where the GET path downloads a file (a temp file on the server).</p>
  
  <p>On completion of the download, the server is suppose to delete the temp file.</p>
  
  <p>At the moment, download of the file is done using Hapi.response.File</p>
  
  <pre><code> var response = new Hapi.response.File(path);
   req.reply(response).header('Content-disposition', 'attachment; filename=' + doc[0].file.name).header('Content-type', mimetype);
  </code></pre>
  
  <p>Is there a simple way to inject an 'on end' event function?</p>