Add ResponseBuilder to rest_api

beacon_node/rest_api/src/lib.rs

@@ -8,6 +8,7 @@ mod helpers;
 mod metrics;
 mod network;
 mod node;
+mod response_builder;
 mod spec;
 mod url_query;
 mod validator;
@@ -18,6 +19,7 @@ use eth2_config::Eth2Config;
 use hyper::rt::Future;
 use hyper::service::service_fn_ok;
 use hyper::{Body, Method, Response, Server, StatusCode};
+use response_builder::ResponseBuilder;
 use slog::{info, o, warn};
 use std::ops::Deref;
 use std::path::PathBuf;