add missing licence header

Author: rande

ioc/extra/jinja2/helper.py

@@ -1,4 +1,17 @@
-__author__ = 'rande'
+#
+# Copyright 2014 Thomas Rabaix <[email protected]>
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
 
 class JinjaHelper(object):
     def __init__(self, container):