Mini IR sensor bracket for Ender 3

This is another bracket for the Escher3d mini differential IR sensor. It works great, and passes the Marlin sensor test with .002mm std deviation.

Sensor can also be bought at https://www.filastruder.com/products/mini-differential-ir-height-sensor

Update 2/16/20 : Update model to use 2nd bolt to make things more secure.