gistfile1.js

 var authToken = localStorageService.get('authToken');
 $http.defaults.headers.common.Authorization = 'auth-token ' + authToken;

  $http.get('/api/whoami').success(function(data) {
    self.user = data;
  }).error(function() {
    self.user = null;
    $location.path('/login'); 
  });