Publishes DHT sensor readings over MQTT from an Arduino/ESP8266/D1 mini

ESP8266 Board Packagee: http://arduino.esp8266.com/versions/2.3.0/package_esp8266com_index.json
Adafruit DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
MQTT PubSubClient: https://github.com/knolleary/pubsubclient