X & Y Endstop mounts for Monoprice Maker Select/Wanhao Duplicator i3

One of my endstops was going bad so I ordered some new ones. When they arrived, they were larger than my originals so I designed a mount for them. Primarily designed to work [with this](http://www.thingiverse.com/thing:1777358) extruder mount or [this mount](http://www.thingiverse.com/thing:1483921) and [these](http://www.thingiverse.com/thing:1375534) bearing blocks.