docs: function addOptionRoute(routeConfig, routeKey) {
      var tmp = routeKey.split(/\s+/);
      var path = '';
      if (tmp.length > 1) {
          path = tmp[1];
      } else {
          path = routeKey;
      }
  
      routeConfig['options ' + path] = function(request, response, next) {
          enableCors(request, response);
          response.sendStatus(200);
      };
  }