Weight sensor Z_MIN mount for Rostock

It's a mount for weight sensor. I use it as Z_MIN probe for autolevel.

If you want to use this you will need these thigs:
* weight sensor like [this](http://ali.pub/m9oqz)
* [HX711 ACD module](http://ali.pub/qad01)
* Any optoсoupler (like 4n35 or PC817)
* Any Arduino
* some bolts and nuts
* [the sketch](https://github.com/alpha6/HX711_endstop)

Read the sketch description and follow instruction.