ticket #3 - Added learning cartridge with all complete examples

the_learning_cartridge/cartridge/scripts/hooks/notificationChangeEmail.js

@@ -0,0 +1,23 @@
+'use strict';
+
+function sendNotificationsChange(emailAddress) {
+    
+    var Mail = require('dw/net/Mail');
+    var Site = require('dw/system/Site');
+    var Template = require('dw/util/Template');
+    var HashMap = require('dw/util/HashMap');
+
+    var context = new HashMap();
+    var email = new Mail();
+    var template = new Template('notificationchangeemail');
+
+    email.addTo(emailAddress);
+    email.setFrom(Site.current.getCustomPreferenceValue('customerServiceEmail') || 'no-reply@salesforce.com');
+    email.setSubject('Notification Settings Changed');
+    email.setContent(template.render(context).text, 'text/html', 'UTF-8');
+    email.send();
+}
+
+module.exports = {
+    sendNotificationsChange: sendNotificationsChange
+};