title: Tokenfield for Bootstrap with Twitter Typeahead shows object in suggestions instead of value
body: <p>I am using tokenfield for bootstrap with twitter typeahead and I am able to this.</p>
  
  <p><a href="http://i.stack.imgur.com/dtFbj.png" rel="nofollow">http://i.stack.imgur.com/dtFbj.png</a></p>
  
  <p>I want only value to be displayed.</p>
  
  <p>Here is my JS:</p>
  
  <pre><code>var engine = new Bloodhound({
          local: bloodhound_tag_data,
          datumTokenizer: function(d) {
              return Bloodhound.tokenizers.whitespace(d.value);
          },
          queryTokenizer: Bloodhound.tokenizers.whitespace
      });
      engine.initialize();
      $('#id_tags').tokenfield({
          typeahead: [null, { source: engine.ttAdapter() }]
      });
  </code></pre>
  
  <p>'bloodhound_tag_data' is a list of objects with 'id' and 'value' keys.</p>