Chenged LED_PIN for Melzi boards, added comment about broken versions of the Sanguino libraries
Fixed typo in comment
compile fix: quickStop() needs stepper.h
Extended comment explaining M42 usage
Revert "Extended comment explaining M42 usage"

This reverts commit 01541ee64ca1239c9bfa593c54085ae78e0b78ec.
Added comment about M42 usage (clean)
Merge pull request #374 from kintel/quickstop

compile fix: quickStop() needs stepper.h
Merge pull request #371 from Banjer/Melzi_LED_PIN

Chenged LED_PIN for Melzi boards, added comment about broken versions of...