HTTP Interceptor to consume a JWT token -- Angularjs Factory

app.config.js

/**
 * Created by dark0s on 18/07/15.
 */
angular
  .module('app').config(function($urlRouterProvider, $stateProvider, $httpProvider) {
    $urlRouterProvider.otherwise('/');

    $stateProvider
      .state('main', {
        url:'/',
        templateUrl: '/views/main.html'
      });

      $httpProvider.interceptors.push('authInterceptor');
  })

.constant('API_URL', "http://localhost:3000/");

auth-interceptor.js

'use strict';

angular.module('app').factory('authInterceptor', function (authToken) {
    return {
      request: function(config) {
        var token = authToken.getToken();
        if(token)
          config.headers.Authorization = 'Bearer' + token;
        return config;
      },
      response: function(response) {
        return response;
      }
    }
  });