Update to ember v1.0.0 and ember-data v1.0.0-beta.1
Update to idiomatic ember 1.0

 * Only auto-save todo when isCompleted changes, not when title changes
 * remove unused buttonClass:hidden
 * use .on('didInsertElement') in view
 * Remove 'text-cleared' sent action from EditTodoView,
   move auto-removal functionality into TodoController.
   Use debounce to prevent multiple calls to `removeTodo`
 * Save the todo in the `createTodo` action of TodosController
 * Put jshint globals declarations all on one line (valid jshint format,
 requested by todomvc)
 * Trim an edited todo's title before checking to remove it.
 * Per the TodoMVC spec, cancel changes to a todo's title when escape is pressed.