added Arfrever to contributors (bug fixes)

--HG--
branch : distribute
extra : rebase_source : 20c9b929a78c99f4fb1304a6fff9d70e17d76d56

CONTRIBUTORS.txt

@@ -4,6 +4,7 @@ Contributors
 
 * Alex Grönholm
 * Alice Bevan-McGregor
+* Arfrever Frehtes Taifersar Arahesis
 * Daniel Stutzbach
 * Hanno Schlichting
 * Jannis Leidel