Bug 747200: Adding MPL header to new file. DONTBUILD because NPOTB r=ctalbert

testing/marionette/client/marionette/geckoinstance.py

@@ -1,3 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/
+
 import datetime
 import socket
 import time