[sane-devel] Documentation: ColorPage-SF600 is supported

[Ryan Reading]

I e-mailed the maintainer of the backend, but haven't heard anything
back, I thought I'd say something here too.

The ColorPage-SF600 is supported by the gt68xx backend.  It's just a
repackage of the
OpticSlim M12.  It uses the same firmware.  I was able to get it
working simply by adding the PID and VID to the config file, setting
the override to the M12, and supply the firmware.

The version I tested with was v1.0.17.

-- Ryan