Listing fetched records in an Ember handlebars template

I'm trying to learn ember by following along with Vic Ramons Ember Rails tutorial.

I'm stuck trying to list the users I have fetched from Rails.

<!-- /templates/users.handlebars -->
<article id="users">
  <h2>Users</h2>
  <ul>
      {{#each user in controller }}
          <li>{{ user.email }}</li>
      {{/each}}
  </ul>
</article>

The /templates/users.handlebars is rendered but no users are listed.

I have checked the JSON output which is ok. When I check the ember inspector tab in chrome I can see 20 'user' models in the Data section.

What is the correct way to list the user records?

/routes/users.js:

Tagged.UsersRoute = Ember.Route.extend({
    model: function(){ return this.store.findAll('user') }
});

/models/users.js:

Tagged.User = DS.Model.extend({
  email: DS.attr('string')
});

/controllers/users.js:

Tagged.UsersController = Ember.Controller.extend({

});

/router.js:

Tagged.Router.map(function() {
    this.resource('users', { path: '/users' })
});

adapters/application_adapter.js:

Tagged.ApplicationAdapter = DS.ActiveModelAdapter.extend({});

The controller JSON response:

{ "users":[
    {"id":"5599bbc44d6178d3ae000000","email":"sasha@example.com"},
    {"id":"5599bbc54d6178d3ae000001","email":"roberta@example.com"},
    {"id":"5599bbc54d6178d3ae000002","email":"reyna.mayert@example.com"}
    # ...
] }