[gnome-2048/app-menu] Add Ctrl-q shortcut for quitting.

[Arnaud B. <arnaudb src gnome org>]

commit 4c4f080437e9316c1c5de13b00dce91cfaa16f19
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Jan 8 15:33:18 2019 +0100

    Add Ctrl-q shortcut for quitting.

 src/application.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/application.vala b/src/application.vala
index e93a8cc..24bb02c 100644
--- a/src/application.vala
+++ b/src/application.vala
@@ -134,6 +134,7 @@ public class Application : Gtk.Application
         _create_scores ();
 
         set_accels_for_action ("app.new-game",  {        "<Primary>n"   });
+        set_accels_for_action ("app.quit",      {        "<Primary>q"   });
         set_accels_for_action ("app.about",     { "<Shift><Primary>F1",
                                                          "<Primary>F1"  });