diff -r 000000000000 -r 6474c204b198 browser/app/profile/prefs.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/app/profile/prefs.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+/* 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/. */
+
+# Mozilla User Preferences
+
+/* Do not edit this file.
+ *
+ * If you make changes to this file while the browser is running,
+ * the changes will be overwritten when the browser exits.
+ *
+ * To make a manual change to preferences, you can visit the URL about:config
+ */