ErikZalm/Marlin — pull request #335 by jcrocholl (2012-12-11 10:03:56+00:00)
Title: Fix endstop pins for Printrboard

Printrboard uses different endstop pins than Teensylu.
This change was proposed and tested by Erik Kastner.

I made a spreadsheet with all AT90USB pin mappings:
https://docs.google.com/spreadsheet/ccc?key=0AihVdu60WUfgdDE1M2F4Z3FIQV9ZQllqVk5zcFpCVkE

Also fix a typo in MANUAL_HOME_POSITION (plural S missing).