Addition of systemd timer/service

mods/readme.txt

@@ -2,6 +2,20 @@ sample-Lighttpd.config
 sample-nginx.config
 
 		Sample configuration files to use Friendica with Lighttpd
-	or Nginx. Pleas check software documentation to know how modify
-	these examples to make them work on your server.
+		or Nginx. Pleas check software documentation to know how modify
+		these examples to make them work on your server.
 
+
+sample-systemd.timer
+sample-systemd.service
+
+		Sample .timer and .service file to start worker.php
+		
+		Please place them in the correct location for your system,
+		typically this is /etc/systemd/system/friendicaworker.timer 
+		and /etc/systemd/system/friendicaworker.service.
+		Please report problems and improvements to 
+		!helpers@forum.friendi.ca and @utzer@social.yl.ms or open an 
+		issue in Github (https://github.com/friendica/friendica/issues).
+		This is for usage of systemd instead of cron to start the worker.php
+		periodically, the solution is work-in-progress and can surely be improved.