Slic3r Configuration for M3D Printer

UPDATE r2: (11 July 2016) Please note that I am not using this configuration any longer. I no longer have an M3D printer. To the best of my knowledge, the information here is still correct and useful, but I have no way to test it.
IF YOU FIND ISSUES, please let me know. I would be happy to collect fixes and changes under this posting!

UPDATE r1: Tested in Slic3r 1.2.9. Please note that you must manually remove the G21 command in the resulting gcode file before submitting the gcode to t