title: "Group" childviews in ContainerView
body: <p>I am creating a dynamic dashboard and currently trying to achieve that with an ContainerView and childViews for the Widgets.
  What I want to do now, is group, or rather wrap a div around a subset of childs. To give the proper example:
  So lets say I create 4 childviews</p>
  
  <pre><code>App.IndexView = Ember.ContainerView.extend({
      classNames: ['dashboard'],
      childViews: ['LinechartView', 'TableView', 'BarchartView', 'TabletwoView'],
      ...
  </code></pre>
  
  <p>So that works fine, as expected and it simply creates 4 divs around each. But what I want to do now, is put a div around the first two and the second two, so I can put them in the same "row" (using bootstrap).
  Am I right in thinking that I would have to create a childview for each row, that is another containerview with each elements or columns being childviews of that? Or is there a simpler way?</p>
  
  <p>To clarify, currently my DOM structure looks like this:</p>
  
  <pre><code>&lt;div id="ember308" class="ember-view dashboard"&gt;
      &lt;div id="ember311" class="ember-view"&gt;LinechartView&lt;/div&gt;
      &lt;div id="ember314" class="ember-view"&gt;TableView&lt;/div&gt;
      &lt;div id="ember317" class="ember-view"&gt;BarChartView&lt;/div&gt;
      &lt;div id="ember320" class="ember-view"&gt;TabletwoView&lt;/div&gt;    
  &lt;/div&gt;
  </code></pre>
  
  <p>and I want my DOM Structure to be like this:</p>
  
  <pre><code>&lt;div id="ember308" class="ember-view dashboard"&gt;
      &lt;div class="row"&gt;
          &lt;div id="ember311" class="ember-view span6"&gt;LinechartView&lt;/div&gt;
          &lt;div id="ember314" class="ember-view span6"&gt;TableView&lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="row"&gt;
          &lt;div id="ember317" class="ember-view span6"&gt;BarChartView&lt;/div&gt;
          &lt;div id="ember320" class="ember-view span6"&gt;TabletwoView&lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>It is more about wrapping the row around the views rather than the additional span6 classes.
  Any more help is really appreciated. Cheers.</p>