title: Restricting file types in JQuery File upload demo
body: <p>I am using <a href="http://blueimp.github.com/jQuery-File-Upload/" rel="noreferrer">JQuery file upload demo</a> for my next project with Codeigniter. Can anyone tell me how do I achieve the following : </p>
  
  <ul>
  <li>Restricting upload file types to .zip and .rar</li>
  <li>Restricting file size</li>
  <li>Clearing the list of Uploaded files (JQuery file upload plugin displays the list of already uploaded files)</li>
  </ul>
  
  <p>Help appreciated !!</p>