Remark reflows the text of your markdown files.
Reflow automatically reflows the text to a defined maximum character length when you save.
The default maximum character length is 72. If you would like to change
this number, go to Atom > Preferences > packages > Remark and
change it there.
If you would like to manually run reflow, use the command ^ + ⌥ +
O.
Run the following command:
apm install remark
You may need to restart Atom. Or you can reload the current window with
the command ^ + ⌥ + ⌘ + L.