title: ember default route when url has non-existing route specified
body: <p>How can I tell ember to show the default route when a non-existing location is specified in the URL?</p>
  
  <p>Lets say I have my ember app with default route as 'home':</p>
  
  <pre><code>http://localhost:50000/#/home
  </code></pre>
  
  <p>That works well.</p>
  
  <p>But lets say the user has gotten a bad URL from somewhere and tries to visit:</p>
  
  <pre><code>http://localhost:50000/#/non-existing
  </code></pre>
  
  <p>What happens in my app is that nothing is displayed.
  How can I tell ember to use the default route whenever a non-existing route is specified?</p>
  
  <p>Here is a simplified version of my router.js</p>
  
  <pre><code>import Ember from 'ember';
  import config from './config/environment';
  
  var Router = Ember.Router.extend({
      location: config.locationType
  });
  
  Router.map(function() {
    this.route('home', {path: '/'});
    this.route('about');
  });
  
  export default Router;
  </code></pre>
  
  <p>I use ember-cli and latest version of ember.js</p>