update readme

README.md

@@ -205,8 +205,11 @@ envelope, envelope_json_str = msghandler.smartpack("test.topic",
 
 # Step 2: Send via your chosen transport (NATS in this example)
 conn = NATS.connect("nats.yiem.cc")
-NATS.publish(conn, "test.topic", envelope_json_str)
+NATS.publish(conn, "test.topic", envelope_json_str; reply_to="test.replytopic")
 NATS.drain(conn)
+
+# OR
+reply = NATS.request("nats.yiem.cc", "test.topic", env_json_str)
 ```
 
 #### JavaScript (Node.js)