NF support piping

[jeremycohensolal]

hello
I would like to be able to do

cat foo.html | htmllint

regards
thx

[dagostinelli]

+1

This would help those of us that have moved our development back into Makefiles.

Also it would be helpful not to be told to make a .htmllintrc file. If it's not there, just use reasonable defaults. Also, I don't want to have to call htmllint init -- again, use reasonable defaults.

See UNIX philosophy.