add myself to the authors file

AUTHORS

@@ -83,3 +83,4 @@ Nathan Youngman <git@nathany.com>
 Charles Law <charles.law@gmail.com>; <claw@conduce.com>
 Nathan Davies <nathanjamesdavies@gmail.com>
 Bo Blanton <bo.blanton@gmail.com>
+Vincent Rischmann <me@vrischmann.me>