title: Ember query param is null
body: <p>I'm trying to get a param from the URL, but it appears it doesn't get assigned at all. I was following this guide <a href="http://emberjs.com/guides/routing/query-params/" rel="nofollow">http://emberjs.com/guides/routing/query-params/</a>
  Below is the <strong>index.js</strong> controller.</p>
  
  <pre><code>export default Ember.Controller.extend({
  
    queryParams: ['authToken'],
    authToken: null,
  
    init: function() {
      var authToken = this.authToken;
      console.log(authToken);
    }
  });
  </code></pre>
  
  <p>When accessing the root URL / or /#, authToken is null, which works as expected. However, when trying out /#?authToken=123, it's still null. Any ideas ?</p>