title: Can't use ion-select
body: <p>I use ionic to create an android mobile application. But I have a problem with the <code>select</code>. 
  On the site of ionic, it can be seen that in the documentation, you can use <code>&lt;ion-select&gt;</code>, but strangely, when I try to use it nothing happens. The result is not the one expected, because it has no effect. <code>&lt;ion-select&gt;</code> is not triggering..</p>
  
  <p>So I am forced to use this for now:</p>
  
  <pre><code>&lt;select ng-model="form.city"&gt;
        &lt;option value=""&gt;Select&lt;/option&gt;
        &lt;option ng-repeat="c in city" ng-value="c.id"&gt;{{c.name}}&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>While I would like to have the same result as on the official website, with <code>&lt;ion-select&gt;</code></p>