Add Daniel Lundin (dln) to contributors

CONTRIBUTORS.txt

@@ -117,4 +117,5 @@ Hynek Schlawack, 2012/07/23
 Paul McMillan, 2012/07/26
 Mitar, 2012/07/28
 Adam DePue, 2012/08/22
-Thomas Meson, 2012/08/28
+Thomas Meson, 2012/08/28
+Daniel Lundin, 2012/08/30