Add Hyeon-bin Jeong to CREDITS.TXT

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@162604 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CREDITS.TXT b/CREDITS.TXT
index 60649cc..eedb4c9 100644
--- a/CREDITS.TXT
+++ b/CREDITS.TXT
@@ -54,3 +54,7 @@
 N: Andrew Morrow
 E: andrew.c.morrow@gmail.com
 D: Minor patches and Linux fixes.
+
+N: Hyeon-bin Jeong
+E: tuhertz@gmail.com
+D: Minor patches and bug fixes.