title: Issue using remote method in jquery validation
body: <p>I'm following <a href="http://alittlecode.com/jquery-form-validation-with-styles-from-twitter-bootstrap/" rel="nofollow">this</a> article in order to validate my form </p>
  
  <p>My problem is when I have to use the <code>remote</code> method, e.g. <code>remote: "check-username.php"</code></p>
  
  <p>Since the <a href="http://docs.jquery.com/Plugins/Validation/Methods/remote" rel="nofollow">documentation</a> for remote method is not so clear for me, I would know:</p>
  
  <p>How I need to structure my json output in php script?</p>