Added license to file and vim tag

opentrafficshaper/POE/Filter/HybridHTTP/WebSocketFrame.pm

-# POE::Filter::HybridHTTP::WebSocketFrame - Copyright 2013, AllworldIT
+# POE::Filter::HybridHTTP::WebSocketFrame - Copyright 2013-2014, AllworldIT
 # Hybrid HTTP filter support for WebSocketFrames
+#
+# 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 3 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/>.
 
 ##
 # Code originally based on Protocol::WebSocket::Frame
@@ -314,3 +327,4 @@ sub _mask {
 }
 
 1;
+# vim: ts=4