code: function (statusInfo) {
      var defer = Q.defer();
      this.driverStatus = JSON.parse(statusInfo).value;
      this.events.emit('driver:status:sauce:' + this.browserName, this.driverStatus);
      defer.resolve();
      return defer.promise;
    }
docs: Loads the browser driver status
  
  @method _driverStatus
  @param {object} statusInfo Driver status information
  @return {object} promise Driver status promise
  @private