Rear hot end holder for Reach printer

Quick mod to the rear hot-end clamp for the Reack 3D printer. This adds a mount to directly attach a switch for the endpoint sensor. Note that this does not use the stock switch. This uses the following switch. http:www.jameco.com/z/SS-5GL-Omron-Electronics-SNAP-ACTION-SWITCH-N-O-N-C-SPDT-HINGE_187709.html