Endstop, modelled in Freecad by Jose Luis Villarejo
y-endstop-holder migrated to freecad. Printed and tested
Assembly: y-endstop holder + endstop added
y-endstop-touch migrated to freecad. Printed and tested
Assembly: y-endstop-touch added
Merge pull request #8 from Obijuan/master

y endstop parts migrated to freecad