Auto Level on Prusa i3

I purchased this printer http://www.aliexpress.com/item/Big-s...471224370.html, I'm trying to add auto leveling so I purchased this inductive sensor http://www.amazon.com/LJ18A3-8-Z-App...ilpage_o05_s00 and 9g servo's as well as some bump stop switches.

The motherboard is a 3D CSTAR http://g02.a.alicdn.com/kf/HTB1EqzWK...usa-font-b.jpg which doesn't have any obvious places to hook all of these components up, I can't find anything to help me do this, so is it possible with this motherboard? Do I use just the inductive sensor or are the servo's and switches neccessary? How do I implement this into the g-code?