Updated mqtt example to work with messagepack.

Messaging/clientEx copy.py

@@ -14,9 +14,8 @@ def on_connect(client, userdata, flags, rc):
     client.subscribe('hello/test', qos=1)
 
 def on_message(client, userdata, message):
-    p = str(message.payload)
-    p = message.payload.decode('utf-8', errors="strict")
-    print("Received message '" + p + "' on topic '" 
+    p = umsgpack.unpackb(message.payload)
+    print("Received message '" + p["message"] + "' on topic '" 
     + message.topic + "' with QoS " + str(message.qos))
 
 def on_disconnect(client, userdata, rc):
@@ -41,7 +40,7 @@ pub = input("Enter something to publish: ")
 
 while pub != 'q':
     if(connected):
-            
+        pub = umsgpack.packb({"message":pub})
         mqttc.publish('hello/test', pub)
         pub = input("Enter something to publish: ")
         print('Message is: ' + pub)