Added MQTT_TOPIC_WEATHER for receiving and storing weather data.

include/my_mqtt.h

@@ -10,6 +10,9 @@ void mqtt_callback(char* complete_topic, byte* pl, unsigned int length);
 
 boolean mqtt_connect();
 
+extern uint8_t weather_icon_ids[6];
+extern int8_t weather_temperatures[6];
+
 void mqtt_setup();
 
 void mqtt_loop();