It's funny you mention that because I'm working on it now. Maybe it's not exactly what you're looking for but it might be close. It's https://writeapp.me https:

It's funny you mention that because I'm working on it now. Maybe it's not exactly what you're looking for but it might be close. It's https://writeapp.me https://writeapp.me Before (or if) you check it out please know that this started out as another distraction-free writing tool but through my own use and how I see my users using it, it's evolving more into a writing platform with a web client, mobile client, a Sublime Text 2 plugin that posts to the site, posts by SMS and email, and I'm working on a Rubygem right now that'll do exactly what you're describing from the command line. I'm not trying to self promote or steal the OP's thunder here, I just got excited when you mentioned this because it made me feel like what I'm working towards is validated.