Revert "Revert "Updated extruder board V1.1""

This reverts commit 95d31b6e42416120fe44263da72c55e619acdaa4.
Clean up repository
Merge remote-tracking branch 'upstream/master'

Conflicts:
	electronics/extruder board/extruder board -- placement 2.brd
	electronics/extruder board/extruder board -- placement 2.sch
Merge pull request #3 from samchoy88/master

Extruder board V1.1