Added BlinkM support over i2c
Added BlinkM support over i2c
Merge https://github.com/timkoster/MarlinBlinkM into Marlin_v1
Define BlinkM default disabled
Added #ifdef BLINKM around new code. Also refined BlinkM.h.
Removed #ifndef BLINKM
Merge pull request #590 from timkoster/Marlin_v1

Added BlinkM support over i2c