Update CONTRIBUTORS.txt

CONTRIBUTORS.txt

@@ -169,3 +169,4 @@ Akexander Koshelev, 2014/08/19
 Davide Quarta, 2014/08/19
 John Whitlock, 2014/08/19
 Konstantinos Koukopoulos, 2014/08/24
+Joe Jevnik, 2014/10/22