how to remove dependency error in angular + ionicframwork?

I am try to make simple login page using require js in ionic framwork .But I am getting this error .

 Uncaught Error: [$injector:nomod] Module 'app.auth' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
    http://errors.angularjs.org/1.3.13/$injector/nomod?p0=app.auth

could you please tell me how to remove this error .I am using ionic framwork which is combination of angular and HTML.

here is my code http://plnkr.co/edit/QPXDMQWDhZumeF5HGvvw?p=preview

define(['ionic','auth/controller/authCtrl'],function(){
    'use strict'
    angular.module("app.auth",['ionic']);
})