added breadboard + Pi wiring diagram to main readme
added breadboard + Pi wiring diagram to main readme

idcrook/rpi-iot-demo-2017,idcrook/rpi-iot-demo-2017,idcrook/rpi-iot-demo-2017,idcrook/rpi-iot-demo-2017,idcrook/rpi-iot-demo-2017,idcrook/rpi-iot-demo-2017