walnut_launchpad.html/js/controllers/signInController.js

app.controller('SignInController', ['$scope', 'Auth', '$location', 'localStorageService', '$rootScope', function ($scope, Auth, $location, localStorageService, $rootScope) {
  var vm = this;

  vm.signIn = function () {
    var userInfo = {
      email: vm.userAuthEmail
    };
    Auth.setUser(userInfo);
    var userAuthenticated = function() {
      return localStorageService.set('userAuth', JSON.stringify(userInfo));
    }();
  };
  
}]);