bin/rainbows in rainbows-3.4.0 vs bin/rainbows in rainbows-4.0.0

@@ -116,6 +116,6 @@
     :daemonize => rackup_opts[:daemonize],
   })
 end
 
 Unicorn::Launcher.daemonize!(options) if rackup_opts[:daemonize]
-Rainbows.run(app, options)
+Rainbows::HttpServer.new(app, options).start.join