emberjs ember-cli - how to remove deprecated notice for {{#each}}

This is using ember-cli 0.2.3

(model) todo.js

import DS from 'ember-data';

export default DS.Model.extend({
   title: DS.attr('string'),
   isCompleted: DS.attr('boolean')  
}).reopenClass({
   FIXTURES: [
      {
        id: 1,
        title: "Complete Ember.js Tutorial",
        isCompleted: false
      },
      {
        id: 2,
        title: "Checkout some more ember stuff",
        isCompleted: true
      },
      {
        id: 3,
        title: "Solve world hunger (with Ember)",
        isCompleted: false
      }
   ]
});

in router.js

this.resource('todos', { path: '/' });

in todos.js

export default Ember.Route.extend({
    model: function() {
        return this.store.find('todo');
    }
});

in todos.hbs

{{#each}}
    //some code here using the model
{{/each}}

in developer console got this notice:

DEPRECATION: Using the context switching form of {{each}} is deprecated. 
Please use the keyword form (`{{#each foo in bar}}`) instead

Please advice on the actual each code for removing the deprecation notice.

The following are codes that I tried:

1 - {{#each todo in todo}} //no error, but no data in todo list
2 - {{#each todo in controller.todo}} //no error, but no data in todo list
3 - {{#each todo in todos.todo}} //no error, but no data in todo list
4 - {{#each todo in todos}} //no error, but no data in todo list

THANK YOU - for any help, cheers!