How to add facebook Login in ember web app using ember-cli-facebook-js-sdk?

I am new to ember and javascript I have to get the access token and the userid.I am not able to code the flow in which it should work.

Controller

actions:{
            fblogin:function () {
                FB.login(function(response) {
                  if (response.status === 'connected') {
                    // Logged into your app and Facebook.
                  } else if (response.status === 'not_authorized') {
                    // The person is logged into Facebook, but not your app.
                  } else {
                    // The person is not logged into Facebook, so we're not sure if
                    // they are logged into this app or not.
                  }

                },{scope:'email'});

                // body...
            }
        }

initializers

name: 'fb',
  initialize:function() {
    return FB.init({
      appId: '128746678',
      version: 'v2.5',
      xfbml: true
    })
  },  

when action fblogin is called it opens the fb for login and app permision but how do I get accesstoken. Please give the correct flow in which I should write the code for fb integration in ember app.