add subscribe_randomizer and mqtt example

Author: brentru

Adafruit_IO/mqtt_client.py

@@ -205,6 +205,17 @@ def subscribe_group(self, group_id):
       """
       self._client.subscribe('{0}/groups/{1}'.format(self._username, group_id))
 
+    def subscribe_randomizer(self, randomizer_id):
+      """Subscribe to changes on a specified random data stream from
+      Adafruit IO's random data service.
+      
+      MQTT random word subscriptions will publish data once per minute to
+      every client that is subscribed to the same topic.
+
+      :param int randomizer_id: ID of the random word record you want data for.
+      """
+      self._client.subscribe('{0}/integration/words/{1}'.format(self._username, randomizer_id))
+
     def subscribe_weather(self, weather_id, forecast_type):
       """Subscribe to Adafruit IO Weather
       :param int weather_id: weather record you want data for

examples/api/random_data.py

@@ -12,8 +12,8 @@
 from Adafruit_IO import Client, Feed, RequestError
 
 # Set to your Adafruit IO key.
-ADAFRUIT_IO_USERNAME = 'USER'
-ADAFRUIT_IO_KEY = 'KEY'
+ADAFRUIT_IO_USERNAME = 'brubell'
+ADAFRUIT_IO_KEY = '6ec4b31bd2c54a09be911e0c1909b7ab'
 
 # Create an instance of the REST client.
 aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)