title: chosen.jquery take an array of values and make them selected
body: <p>I am using chosen.jquery.js 
  <a href="http://harvesthq.github.io/chosen/" rel="nofollow">http://harvesthq.github.io/chosen/</a></p>
  
  <p>I have it implemented, and it is working. When the user hits save I save the values to my database. If the user refreshes or comes back to the page, 
  I retrieve those values via an array such as ["val1", val2"]<br>
  I want to than take those values and have the chosen multi select already have those selected by default, how can I do that? 
  I know that I need to update, $("#form_field").trigger("chosen:updated");
  But I dont see anything for selecting values.
  Any help would be appreciated!</p>