Angular Authorization with Intetceptors and ngStorage

interceptors.js

$httpProvider.interceptors.push(['$q', '$location', '$localStorage', function($q, $location, $localStorage) {
        return {
                'request': function (config) {
                    config.headers = config.headers || {};
                    if ($localStorage.token) {
                        config.headers.Authorization = 'Portador ' + $localStorage.token;
                    }
                    return config;
                },
                'responseError': function(response) {
                    if(response.status === 401 || response.status === 403) {
                        $location.path('/signin');
                    }
                    return $q.reject(response);
                }
            };
        }]);