title: values not showing up in select button
body: <p>I am trying to get options in select button but its not showing up. </p>
  
  <p>my code is as below: </p>
  
  <p>index.html:</p>
  
  <pre><code>&lt;select ng-model="main.order" ng-options="order as order.title for order in main.orders"&gt;&lt;/select&gt;
  </code></pre>
  
  <p>app.js:</p>
  
  <pre><code>$http.get('src/json/sortingKeys.json').success(function(response){
      vm.orders =  response.orders;
      vm.order = vm.orders[0];
    });
  </code></pre>
  
  <p>Before it was working fine and i was getting values in select options. but then I wanted to use material design from <a href="http://materializecss.com/about.html" rel="nofollow">http://materializecss.com/about.html</a>. 
  I have also initialized "select" as per what they told :</p>
  
  <pre><code>$(document).ready(function(){ $('select').material_select();});
  </code></pre>
  
  <p>Eventhough I am getting values to html page, I am not getting them inside select options. please refer the below code which i can see after inspecting in browser:</p>
  
  <pre><code>    &lt;div class="select-wrapper"&gt;&lt;input class="select-dropdown" readonly="true"
                                     data-activates="select-options-082235b8-d9be-505d-90ab-c4cc9b9bb765" value=""
                                     type="text"&gt;&lt;i class="mdi-navigation-arrow-drop-down"&gt;&lt;/i&gt;
    &lt;select  class="selectOptions ng-pristine ng-untouched ng-valid initialized" ng-model="main.order"
          ng-options="order as order.title for order in main.orders"&gt;
    &lt;option selected="selected" label="Year Ascending" value="object:16"&gt;Year Ascending&lt;/option&gt;
    &lt;option label="Year Descending" value="object:17"&gt;Year Descending&lt;/option&gt;
    &lt;option label="Title Ascending" value="object:18"&gt;Title Ascending&lt;/option&gt;
    &lt;option label="Title Ascending" value="object:19"&gt;Title Ascending&lt;/option&gt;
  &lt;/select&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Please let me know what am I doing wrong. Code is available at github: <a href="https://github.com/pradeepb6/firstExample/tree/master/app" rel="nofollow">https://github.com/pradeepb6/firstExample/tree/master/app</a></p>