todo: Added note about Ruby bindings disabled by default.
todo: Added note about Ruby bindings disabled by default.

Signed-off-by: Ian Abbott <abbotti.mev.co.uk>

Linux-Comedi/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,olsonse/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,Linux-Comedi/comedilib