update readme

README.md

@@ -107,11 +107,14 @@ msghandler enables seamless communication across multiple platforms through NATS
 #### Julia
 
 ```julia
-using msghandler
+using msghandler, NATS
+
 
 data = [("message", "Hello World", "text")]
 env, env_json_str = smartpack("/chat/room1", data; broker_url="nats://localhost:4222")
-println("Message sent!")
+conn = NATS.connect(broker_url)  # Create NATS connection
+NATS.publish(conn, subject, message)  # Publish message to NATS
+NATS.drain(conn)
 ```
 
 #### JavaScript (Node.js)