McHumi - DHT 22 Humidity / temperature logger for MQTT

• Based on CoogleIOT lib (https://github.com/coogle/CoogleIOT)
• and SimpleDHT (https://github.com/winlinvip/SimpleDHT)
• and (https://github.com/wemos/WEMOS_SHT3x_Arduino_Library)
• and (https://github.com/sparkfun/SparkFun_HTU21D_Breakout_Arduino_Library)
• by Tobias Blum (https://github.com/toblum)

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• Also contains: ArduinoTempGas
• Simple JSON Server for DS18B20 and MQ-5 using Arduino Uno and Ethernet Shield