add Martin Ritter to CREDITS


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16925 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 5bd1810..f4e9171 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -384,6 +384,7 @@
 Rob Purchase
 Andreas Müller
 Christopher Williams
+Martin Ritter
 
 
 The libmad team