Added custom systemd irkerd configuration

irkerd.custom.service

+[Unit]
+Description=iDB irker server
+After=network.target
+
+[Service]
+User=www-data
+ExecStart=/usr/bin/python /var/www/irker/irkerd -H 0.0.0.0 -n iDBirker
+ExecStartPost=/bin/sleep 10 
+ExecStartPost=/var/www/irker/irk irc://irc.snt.utwente.nl:6667/idb?key=xxx I\'m back!
+ExecStop=/var/www/irker/irk irc://irc.snt.utwente.nl:6667/idb?key=xxx I\'ll be back!
+ExecStop=/bin/sleep 2
+Restart=always
+
+[Install]
+WantedBy=multi-user.target