Added email help text and added licensing info

web/react/components/user_settings_notifications.jsx

@@ -1,3 +1,6 @@
+// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
+// See License.txt for license information.
+
 var UserStore = require('../stores/user_store.jsx');
 var SettingItemMin = require('./setting_item_min.jsx');
 var SettingItemMax = require('./setting_item_max.jsx');