AutoBed Leveling Guide for Marlin 1.8.1

I installed an INDUCTIVE auto-bed leveling sensor onto my Tronzy X5S. Attached you will find some background information as well as a guideline for how to setup ABL on Marlin V1.1.8. Included are the details about specific changes needed to the Config.h file as well as some guidelines that I use to get it setup and usable.

I have set my ABL up using a 4X4 bi-linear method. This fits into theTronxy X5S standard control board (ATMEGA 1284P Processor).