Merge pull request #3161 from joesanford/patch-1

Update CONTRIBUTORS.txt

CONTRIBUTORS.txt

@@ -208,3 +208,4 @@ Ahmet Demir, 2016/02/27
 Maxime Verger, 2016/02/29
 Alexander Oblovatniy, 2016/03/10
 Komu Wairagu, 2016/04/03
+Joe Sanford, 2016/04/11