Add a link to the full article that appeared in c't.

Thanks to MichaT for spotting it.

diff --git a/activities.mdwn b/activities.mdwn
index d8aa775..ba5134b 100644 (file)
--- a/activities.mdwn
+++ b/activities.mdwn
@@ -57,6 +57,7 @@ References to tinc that can be found in other articles:
 
 * [c't magazin](http://www.heise.de/ct/), 2009, issue 19:
   *"[Maschen-VPN](http://www.heise.de/ct/inhalt/2009/19/176/)"* (German).
+  The full article can be read [online at heise.de](http://www.heise.de/netze/Dezentrales-VPN-mit-Tinc--/artikel/145795).
 * [Linux Magazin](http://www.linux-magazin.de), October 2003:
   *"[Einfache Verbindung: VPN-Daemon im Userspace: Tinc](http://www.linux-magazin.de/Heft-Abo/Ausgaben/2003/10/Einfache-Verbindung)"* (German).
 * [Building Linux Virtual Private Networks](http://www.buildinglinuxvpns.net/contents/),