Flag --no-color doesn't do anything

[zyriab]

Hey there, thanks for this nice tool!
I can't get --no-color to work, when running cat file.js | prettierd --no-color file.js, the output is still colorized.
I tried the same thing with Prettier and got no issue.

I've tried to debug this myself but did not find where to pass this flag, I noticed that it doesn't seem to be used anywhere, though!

Would love to open a PR if you can give me some minimal directions, otherwise I'll try to tackle this once more by myself when I got the time :)

Thanks and take care!