Metadata cleanup
Reduce Y and Z sizes to current mechanical specs
Configure Auto Bed Leveling
Flip Z direction since motor is now on top
Updated Configuration.h file for Missionbot parameters

288 — Needed to invert the direction of the Wades extruder

314 — Printer is able to use Auto Bed Leveling (ABL). This also allowed
Z Safe Homing to be used since the printer must home to ABL location.

323-326 — Defined the points for the auto bed leveling.

329-331 — This is the relative position of the ABL probe with respect
to the Hot End.

353 — Z Safe Homing is required since the ABL probe is also being used
for Z Home

362-363 — When the G28 (Home) command is used, the carriage will move
to this X/Y coordinate before homing Z.

397 - Adjusted steps for Z axis motor and Wades Extruder such that 1
unit = 1mm. Current values accurate to 5%.
Merge pull request #7 from MissionSt/missionst/missionbot2

Config changes for MissionBot, including Auto Bed Leveling.