Added setup config file for upstart session init

installer/lib/airtime-session-init-setup.conf

@@ -0,0 +1,22 @@
+start on runlevel [2345]
+stop on runlevel [!2345]
+
+task
+
+env user=WEB_USER
+
+export user
+
+script
+  uid=$(getent passwd "$user"|cut -d: -f3)
+  gid=$(getent passwd "$user"|cut -d: -f4)
+
+  # Create directory that would normally be
+  # created by PAM when a user logs in.
+  export XDG_RUNTIME_DIR="/run/user/$uid"
+  mkdir -p "$XDG_RUNTIME_DIR"
+  chmod 0700 "$XDG_RUNTIME_DIR"
+  chown "$uid:$gid" "$XDG_RUNTIME_DIR"
+
+  start airtime-session-init user="$user"
+end script