Simple MQTT Mosquitopp client class inspired by:
https://github.com/paraka/mosquittopp
https://github.com/Auctoris/mosquitopp_client
Easy connections, subscriptions and publishing.
sudo apt-get install libmosquittopp-dev
sudo apt-get install libmosquitto-dev
g++ main.cpp MQTT.cpp -lmosquittopp
./a.out