add authors file

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..9b83fb9
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,4 @@
+Harald Welte <laforge@gnumonks.org>
+Holger Freyther <zecke@selfish.org>
+Stefan Schmidt <stefan@datenfreihafen.org>
+Daniel Willmann <daniel@totalueberwachung.de>