add license headers

brozzler/browser.py

@@ -1,5 +1,21 @@
-#!/usr/bin/env python
-# vim: set sw=4 et:
+#
+# brozzler/browser.py - classes responsible for running web browsers
+# (chromium/chromium) and browsing web pages in them
+#
+# Copyright (C) 2014-2016 Internet Archive
+#
+# 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.
+#
 
 import logging
 import json