title: Twitter typeahead different value to display
body: <pre><code>    //javascript
      var customer = new Bloodhound({
      datumTokenizer: Bloodhound.tokenizers.obj.whitespace('name'),
      queryTokenizer: Bloodhound.tokenizers.whitespace,
  
      prefetch: 'include/customer.json'
      });
  
      $('.typeahead').typeahead(null, {
      name: 'customer',
      display: 'name',
      source: customer
      });
  
  
      //json
      [
      {"identity":"1","name":"Uzumaki Naruto"},
      {"identity":"2","name":"Monkey D. Luffy"},
      {"identity":"3","name":"Ichigo Kurosaki"}
      ]
  
     //html
     &lt;input class="typeahead" type="text" name="customer"/&gt;
  </code></pre>
  
  <p>is it possible in typeahead plugin to search and display the '<code>name</code>' and when i submit the form it will give me the value of '<code>identity</code>'. Btw i`m using 0.11.1v of typeahead. TIA</p>