title: Backbone.js - getting id from collection create
body: <p>I am adding a model to a collection using the <code>create</code> method and the api is responding just fine.  The model seems to have been properly returned and see the <code>console.dir( resp );</code> which is what I was looking for.  However, when I try to access <code>runningorderid</code>, which is the <code>id</code> as defined with <code>idAttribute</code>, the response is null.  I presume this is something to do with the async nature of the response, but I don't know how to deal with it.</p>
  
  <pre><code>var resp = window.app.RunningOrderCollection.create(
          { runningorderid: null, listitemid: 1, starttime: n} , 
          { wait: true }
  );
  console.dir( resp );
  console.dir( resp.get("strt") );
  console.dir( resp.id );
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/9c5KF.png" alt="screenscape of problem"></p>