Geetech G2S Configuration for Repetier Firmware

Repteier Firmware for Geeetech G2S based on WBRUCEM https://www.thingiverse.com/thing:1301129

Modifications:

- PWM fan used to cool the printed object - needs rewiring of the fan cabling - see: website bechele.de
- Autoleveling activated and configured
- Autoleveling area reduced to 3 x 3 steps with only two repeats each.
- Autoleveling positions swapped to prevent of mechanical crash after levelling when homing.
- Preparation for printing ABS with temperatures up