Merge pull request #3003 from vklindukh/patch-1

Update CONTRIBUTORS.txt

CONTRIBUTORS.txt

@@ -200,3 +200,4 @@ Sukrit Khera, 2015/10/26
 Dave Smith, 2015/10/27
 Dennis Brakhane, 2015/10/30
 Chris Harris, 2015/11/27
+Valentyn Klindukh, 2016/01/15