title: Backbone: filtering models from an array of names
body: <p>Have an array of id's</p>
  
  <pre><code>['tom','tim','joe','matt','scott']
  </code></pre>
  
  <p>Each model has an attribute that has an id. </p>
  
  <p>How can I grab all 5 of the models and put in a new collection?</p>