Copyright notice added

vendor/vendor.lua

@@ -1,3 +1,21 @@
+---
+--vendor
+--Copyright (C) 2012 Bad_Command
+--
+--This library is free software; you can redistribute it and/or
+--modify it under the terms of the GNU Lesser General Public
+--License as published by the Free Software Foundation; either
+--version 2.1 of the License, or (at your option) any later version.
+--
+--This program is distributed in the hope that it will be useful,
+--but WITHOUT ANY WARRANTY; without even the implied warranty of
+--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--GNU General Public License for more details.
+--
+--You should have received a copy of the GNU Lesser General Public
+--License along with this library; if not, write to the Free Software
+--Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+---
 
 vendor.traversable_node_types = {
 	"default:chest",