Ember Simple Auth Torri custom Provider

I am trying to create a custom OAuth Provider for Ember Simple Auth Torri wrapper for Yahoo OAuth 2.0. I used the built in providers for Facebook and Google without any problems,but since Yahoo OAuth package is not provided by default I am trying to follow the manual and create my own.

//app/torri-provider/yahoo-oauth2.js

export default Ember.Object.extend({
  host: 'http://ift.tt/1HTHuyV',
  // create a new authorization
  open: function(options) {
    return new Ember.RSVP.Promise(function(resolve, reject){
      console.log("Hi");
      var authurl="http://ift.tt/1INw4NT";

      return $.ajax(authurl, "GET", {
        // CORS
        crossDomain: true,
        xhrFields: {withCredentials: true}
      }).then(function(json) {
        // Massage this demo API endpoint to look like RESTAdapter expects.
        return { things: [json] };
      });


    });
  }
});

In my controller,I am calling it as -

'yahoo-share':function(){
  var self=this;
  this.get('session').authenticate('simple-auth-authenticator:torii',"yahoo-oauth2");
},

I am however unable to get part the CORS issue and receiving the following error on my console-

userhomeinvitemembers:1 XMLHttpRequest cannot load http://ift.tt/1INw4NT. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access.

I have tried adding the oauth2 endpoint to ember cli whitelist and content security policy whitelist but still getting the same error.

  ENV.contentSecurityPolicy = {
    'default-src': "'none'",
    'script-src': "'self' http://localhost:4200/",
    'font-src': "'self' http://localhost:4200/",
    'connect-src': "'self' http://localhost:4200/ http://localhost:3000/ http://ift.tt/1HTHuyZ http://ift.tt/1INw4NT",
    'img-src': "'self'",
    'style-src': "'self'",
    'media-src': "'self'"
  },


    ENV['simple-auth'] = {
      crossOriginWhitelist: ['http://ift.tt/1INw4NT'],
      authorizer: 'simple-auth-authorizer:oauth2-bearer',
      authenticationRoute: 'index',
      routeIfAlreadyAuthenticated:'userwelcome',

    },

    ENV['torii'] = {
      providers: {
        'facebook-oauth2': {
          apiKey: '799728020115355'
        },
        'google-oauth2': {
          apiKey:'299472944809-sddblocmketamp64sapk51qdrromkj0g.apps.googleusercontent.com',
          scope: 'http://ift.tt/yb7fwm',
          redirectUri:'http://localhost:4200/userhomeinvitemembers'
        },
        'yahoo-oauth2': {
          apiKey:'dj0yJmk9UmpXWG1odlVlenRSJmQ9WVdrOVdFUkxRbVo2TkdVbWNHbzlNQS0tJnM9Y29uc3VtZXJzZWNyZXQmeD04Zg--',

        }
      }
    };