JsonCpp is now licensed under MIT license, or public domain if desired and recognized in your jurisdiction.

diff --git a/include/json/forwards.h b/include/json/forwards.h
index 3a10a3b..dd32fa0 100644
--- a/include/json/forwards.h
+++ b/include/json/forwards.h
@@ -1,3 +1,8 @@
+// Copyright 2007-2010 Baptiste Lepilleur
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
 #ifndef JSON_FORWARDS_H_INCLUDED
 # define JSON_FORWARDS_H_INCLUDED