Forgot to commit the credits


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4019 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 59bd29f..c10271e 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -80,3 +80,4 @@
 Barry McIntosh
 Leslie Donaldson
 Lee Pilgrim
+Zakk Roberts