title: documentation for catcomplete
body: <p>I just tried to find documentation for catcomplete. I need manual for how to use _renderItem. I have found this <a href="http://jqueryui.com/autocomplete/#categories" rel="nofollow">http://jqueryui.com/autocomplete/#categories</a> but seems there is no mention about that only just example for _renderMenu</p>
  
  <pre><code>    _renderMenu: function( ul, items ) {
          var that = this,
              currentCategory = "";
          $.each( items, function( index, item ) {
              if ( item.category != currentCategory ) {
                  ul.append( "&lt;li class='ui-autocomplete-category'&gt;" + item.category + "&lt;/li&gt;" );
                  currentCategory = item.category;
              }
              that._renderItemData( ul, item );
          });
      }
  </code></pre>