wireshark: add copyright to output file
This must be GPLv2 because it uses Wireshark APIs.
http://ask.wireshark.org/questions/1059/license-of-dissectors-written-in-lua
diff --git a/wireshark_gen/templates/_copyright.lua b/wireshark_gen/templates/_copyright.lua
new file mode 100644
index 0000000..533ed2e
--- /dev/null
+++ b/wireshark_gen/templates/_copyright.lua
@@ -0,0 +1,15 @@
+-- Copyright 2013, Big Switch Networks, Inc. This library was generated
+-- by the LoxiGen Compiler.
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 2 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 General Public License
+-- along with this program. If not, see <http://www.gnu.org/licenses/>.