Add CORS information in readme
when deploying the api cube on a separate URL from the frontend, we need to set
more_set_headers "Access-Control-Allow-Origin: $http_origin";
more_set_headers "Access-Control-Allow-Credentials: true";
more_set_headers "Access-Control-Allow-Methods: GET,POST,OPTIONS";
more_set_headers "Access-Control-Allow-Headers: X-Client-Name, Content-Type";
in the server config