Description: Add 'Documentation=' key to service file (thanks, lintian).
Author: Daniel Teichmann <daniel.teichmann@das-netzwerkteam.de>
Forwarded: https://github.com/openNDS/openNDS/pull/344

--- a/resources/opennds.service
+++ b/resources/opennds.service
@@ -1,5 +1,6 @@
 [Unit]
 Description=openNDS Captive Portal
+Documentation=man:opennds
 After=network.target
 StartLimitIntervalSec=10
 StartLimitBurst=10