code: function configurePushDevice(options) {
      return Q.when(promiseRegistrationEventResponse, function (registrationEventResponse) {
          if (!registrationEventResponse) {
              // either there is no configuration or since this method was called,
              // registration was canceled
              return Q.resolve(undefined);
          }
          // remaining implementation in push.ts as this is independent of Cordova...
          return push.registerPushDevice(registrationEventResponse.registrationId, options);
      });
  }
docs: authorizes current Relution server logged onto to send push notifications by transmitting the
  registration token.