message: use config's port number
diff: @@ -53,13 +53,13 @@ fn main() {
  ("init", _) => { cfg.save().unwrap(); },
  ("start", _) => {
  info!("Starting {}-{}", crate_name!(), crate_version!());
  - info!("listenting to port 3000");
  let mut router = router::Router::new();
  let storage = Arc::new(cfg.get_storage("mainnet").unwrap());
  handlers::block::Handler::new(storage.clone()).route(&mut router);
  handlers::pack::Handler::new(storage.clone()).route(&mut router);
  handlers::epoch::Handler::new(storage.clone()).route(&mut router);
  - Iron::new(router).http("localhost:3000").unwrap();
  + info!("listenting to port {}", cfg.port);
  + Iron::new(router).http(format!("localhost:{}", cfg.port)).unwrap();
  },
  _ => {
  println!("{}", matches.usage());
  