v0.6 - Dual extrusion improvements

Set extruder offsets to aid Cura in nozzle wipe functions.
Tool change position is now at the right back corner of the build plate.
Changed default skirt distance and ooze shield parameters.

v0.5 - Dual extrusion support

Now supports both single and dual extrusion. Please read README for the details.

v0.4 with Linux support

Moved scripts to a separate directory