Re: --css-include & -I

[Karl Berry]

    I expected the latter to help the former finding its file, but it
    doesn't behave so: an actual path is expected.  Maybe just clarify the
    documentation?

Thanks Akim.

Yeah, I felt it would be more confusing than useful for -I to apply to
css files.  And I just didn't feel like setting up another search path.

I'll update the doc.

Cheers,
karl