Improved Slic3r profiles to work with RepRapFirmware 0.65b.
X carriage modified with elongated idler bearing slot, clearance for four wire proximity sensor board, and location dimples to fit into the linear bearing grooves.
Retract speed reduced.
pdf folder added with machined component drawings.
T1 added to start GCode to work with RepRapFirmware v0.78
Merge remote-tracking branch 'origin/master'