Add a quit command line option for polari
Since bug 770750 has been fixed, polari can now run in the background. It would be useful now to have a command line option "--quit" to quit a background instance of the app, for example by ssh-ing into your office desktop (and without accessing the full GUI).
From the developer's comment:
gapplication action org.gnome.Polari quit
should already work (assuming access to the same DBus session bus), but I guess we could expose that as command line option...