Support stdin

[mankoff]

as in detex file.tex | writegood

[RichardLitt]

PRs accepted. :)

[einar-io]

I had this exact problem and used this workaround:

detex file.tex | writegood /dev/stdin

[einar-io]

My previous workaround does not work for me now, so instead I create a temporary file:

echo "weasel words in it could be divided into three main categories" > pipe.temp; npx write-good pipe.temp; rm pipe.temp