Update to msal@1.2.1

Author: sameerag

index.html

@@ -24,8 +24,11 @@
   <!-- bluebird only needed if this page needs to run on Internet Explorer -->
   <!-- msal.min.js can be used in the place of msal.js; included msal.js to make debug easy -->
   <script src="https://cdnjs.cloudflare.com/ajax/libs/bluebird/3.3.4/bluebird.min.js" class="pre"></script>
-  <script src="https://secure.aadcdn.microsoftonline-p.com/lib/1.1.2/js/msal.js"></script>
-  <script src="https://code.jquery.com/jquery-3.2.1.min.js" class="pre"></script>
+  <script type="text/javascript" src="https://alcdn.msauth.net/lib/1.2.1/js/msal.js" integrity="sha384-9TV1245fz+BaI+VvCjMYL0YDMElLBwNS84v3mY57pXNOt6xcUYch2QLImaTahcOP" crossorigin="anonymous"></script>
+    <script type="text/javascript">
+        if(typeof Msal === 'undefined')document.write(unescape("%3Cscript src='https://alcdn.msftauth.net/lib/1.2.1/js/msal.js' type='text/javascript' integrity='sha384-9TV1245fz+BaI+VvCjMYL0YDMElLBwNS84v3mY57pXNOt6xcUYch2QLImaTahcOP' crossorigin='anonymous'%3E%3C/script%3E"));
+    </script>
+    <script src="https://code.jquery.com/jquery-3.2.1.min.js" class="pre"></script>
 
   <h2>Getting an access token with Azure AD B2C and calling a Web API</h2>
   <div>