rib: fix logic bug in config file validation

Closes: https://github.com/named-data/NFD/pull/9
Change-Id: I3b7c53c475098ec83fd469ceb40a306dfcd80cf3
diff --git a/AUTHORS.md b/AUTHORS.md
index 066a2f6..9a3b409 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -19,6 +19,7 @@
 * Nick Gordon <https://github.com/gorgonical>
 * Giulio Grassi <https://www.lip6.fr/actualite/personnes-fiche.php?ident=D1461>
 * Yi Huang <https://www.linkedin.com/in/yihuang1991>
+* Jongseok Lee <https://github.com/imwhiz>
 * Spencer Lee <https://www.linkedin.com/in/spenlee>
 * Vince Lehman <http://vslehman.com>
 * Yanbiao Li <https://www.linkedin.com/pub/yanbiao-li/24/7a1/4ba>