added author information and fixed small off-by-one bug

--HG--
branch : trunk
diff --git a/AUTHORS b/AUTHORS
index fc07fba..29835e3 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -6,3 +6,4 @@
 - Georg Brandl
 - Lawrence Journal-World.
 - Bryan McLemore
+- Mickaël Guérin <kael@crocobox.org>