X-Endstop for FolgerTech 2020 Prusa i3

This is a replacement for the X-Endstop mount that comes with the FolgerTech 2020 Prusa i3 printer. I found the original was very easy to bump out of alignment, causing the printer head to miss the switch and bang into the idler when homing.

I really like the endstop http://www.thingiverse.com/thing:85368 by clefranc. However, that one was designed for a slightly different switch geometry, and was not aligned with the FolgerTech X-carriage. I made two changes to clefranc's design:

• Moved the switch mount to align the FolgerTech endstop switch with the FolgerTech X-carriage.
• Included a cutout compatible with the X-belt tensioner included in wderoxas's X-idler design: http://www.thingiverse.com/thing:936464.

Note: This endstop was designed to be mounted on the left side of the printer rather than the default FolgerTech position on the right.