title: ion-nav-bar not displaying anything
body: <p>I created a navigation bar using <code>ionic-nav-bar</code>. Added an <code>h1</code> element with class <code>title</code>. But it's not displaying anything.</p>
  
  <p>Here's my code</p>
  
  <pre><code>&lt;ion-pane&gt;
      &lt;ion-nav-bar class="bar-stable"&gt;
          &lt;h1 class="title"&gt;Ionic Blank Starter&lt;/h1&gt;
      &lt;/ion-nav-bar&gt;
      &lt;ion-content&gt;
      &lt;/ion-content&gt;
  &lt;/ion-pane&gt;
  </code></pre>
  
  <p>However, this is working:</p>
  
  <pre><code>&lt;ion-pane&gt;
      &lt;ion-header-bar class="bar-stable"&gt;
          &lt;h1 class="title"&gt;Ionic Blank Starter&lt;/h1&gt;
      &lt;/ion-header-bar&gt;
      &lt;ion-content&gt;
      &lt;/ion-content&gt;
  &lt;/ion-pane&gt;
  </code></pre>
  
  <p>So what am i doing wrong?</p>