title: iframe tag doesn't work in latest version of Ionic
body: <p>I followed this tutorial for the Ionic framework to learn how to build an app: <a href="https://thinkster.io/ionic-framework-tutorial/" rel="nofollow">https://thinkster.io/ionic-framework-tutorial/</a> 
  and it worked great. </p>
  
  <p>Then I started adding features, like a page with an iframe tag in it, and it worked too in the android emulator. But when I went to build my own app from scratch, the iframe works only if you run the app with <strong>ionic serve --lab</strong>, it doesn't work in the emulator or in a real android device.</p>
  
  <p>The main differences between my app and the example tutorial is that the tutorial is build with <strong>Ionic v1.0.0-beta.14</strong> (and I think Apache Ant), and my app with <strong>Ionic v1.0.0-rc.4</strong></p>
  
  <p>Is there a way to fix this?</p>
  
  <p>Here is the code, is very simple:</p>
  
  <pre><code>&lt;ion-view view-title="Detalles de mensaje" class="detallesWV-page"&gt;
    &lt;ion-nav-buttons side="right"&gt;
     &lt;button class="button button-icon icon ion-navicon-round" ng-click="openPopover($event)"&gt;
     &lt;/button&gt;
    &lt;/ion-nav-buttons&gt;
  
    &lt;ion-content scroll="false"&gt;
  
        &lt;iframe src="http://www.cnn.com/" height="400px" width="350px"&gt;&lt;/iframe&gt;
  
      &lt;div class="row"&gt;
        &lt;div class="col"&gt;
          &lt;button class="button button-assertive" ng-class="" ng-click="openPage()"&gt;
            {{ 'NO SE MUESTRA CONTENIDO' }}
          &lt;/button&gt;
        &lt;/div&gt;
      &lt;/div&gt;
  
      &lt;/ion-content&gt;
  &lt;/ion-view&gt;
  </code></pre>