Create MQTTGateway.ino

MQTTGateway Beta 0.1
Create MyMQTT.cpp

MQTTGateway beta 0.1
Create MyMQTT.h

MQTTGateway beta 0.1
missed \n -> debug(PSTR("version mismatch\n"));
Check if incomming message contains anything.
Merge pull request #19 from Damme/patch-1

Added MQTTGateway version 0.1b