title: passing 2 $index values within nested ng-repeat
body: <p>So I have an ng-repeat nested within another ng-repeat in order to build a nav menu. On each <code>&lt;li&gt;</code> on the inner ng-repeat loop I set an ng-click which calls the relevant controller for that menu item by passing in the $index to let the app know which one we need. However I need to also pass in the $index from the outer ng-repeat so the app knows which section we are in as well as which tutorial.</p>
  
  <pre><code>&lt;ul ng-repeat="section in sections"&gt;
      &lt;li  class="section_title {{section.active}}" &gt;
          {{section.name}}
      &lt;/li&gt;
      &lt;ul&gt;
          &lt;li class="tutorial_title {{tutorial.active}}" ng-click="loadFromMenu($index)" ng-repeat="tutorial in section.tutorials"&gt;
              {{tutorial.name}}
          &lt;/li&gt;
      &lt;/ul&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>here's a Plunker <a href="http://plnkr.co/edit/bJUhI9oGEQIql9tahIJN?p=preview">http://plnkr.co/edit/bJUhI9oGEQIql9tahIJN?p=preview</a></p>