Positional index in Ember.js collections iteration

http://stackoverflow.com/questions/8870785/positional-index-in-ember-js-collections-iteration

HTML

<script src="http://builds.handlebarsjs.com.s3.amazonaws.com/handlebars-v1.3.0.js"></script>
<script src="http://builds.emberjs.com/tags/v1.4.0/ember.prod.js"></script>
<script type="text/x-handlebars">
{{#each App.peopleController}}
    <tr>
      <td>
      </td>
      <td class="plus expander">&nbsp;</td>
      <td>{{content.name}}</td>
    </tr>
{{/each}}
</script>

JavaScript

App = Ember.Application.create();

App.peopleController = Ember.ArrayController.create({
    content: [ { name: 'Roy' }, { name: 'Mike' }, { name: 'Lucy' } ]
});