[gnome-builder] add Jürg to AUTHORS

[Christian Hergert <chergert src gnome org>]

commit 93875f503e981f124e383987f25de013c4e45fca
Author: Christian Hergert <christian hergert me>
Date:   Thu Apr 28 01:37:16 2016 -0700

    add Jürg to AUTHORS

 AUTHORS |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/AUTHORS b/AUTHORS
index 19e30fb..39f0ee6 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -37,6 +37,7 @@ Jakub Steiner
 Jasper St. Pierre
 Joaquim Rocha
 Jonathon Jongsma
+Jürg Billeter
 Kris Thomsen
 Lars Uebernickel
 Lionel Landwerlin