Add Romuald Brunet to CONTRIBUTORS.txt

CONTRIBUTORS.txt

@@ -130,4 +130,5 @@ Vlad Frolov, 2013/01/23
 Milen Pavlov, 2013/03/08
 Pär Wieslander, 2013/03/20
 Theo Spears, 2013/03/28
+Romuald Brunet, 2013/03/29
 Aaron Harnly, 2013/04/04