Add runit config files

Closes #657

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

support/runit/README.md

@@ -0,0 +1,17 @@
+## runit config files
+
+These are the config files to run _Mobilizon_ under `runit` supervisor.
+
+The `user` directory contains the configs for running it completely under a
+user, with full supervisory control. It requires the system to start
+`runsvdir` in user mode so the dæmon can be handled as the user as
+
+  - `sv start ~/sv/mobilizon`
+  - `sv stop ~/sv/mobilizon`
+
+This method is good when you are not root, or it's not simple to switch.
+
+
+
+The `system_wide` directory contains the config to administer by root user,
+if you can access root easily.