Update JS version

Author: darryncampbell-pubnub

index.html

@@ -70,7 +70,7 @@ <H1>Chat in 10 lines of JavaScript. Powered by PubNub</H1>
 
 
   <!--  Begin count: lines of code to create a chat app with the PubNub SDK (count ;)-->
-  <script src="https://cdn.pubnub.com/sdk/javascript/pubnub.7.2.0.min.js"></script>
+  <script src="https://cdn.pubnub.com/sdk/javascript/pubnub.8.2.5.min.js"></script>
   <script>var countTx = 0, countRx = 0, id = 'user_' + Math.random();
     (function () {
       var pubnub = new PubNub({publishKey: 'demo', subscribeKey: 'demo', userId: id}); // Your PubNub keys here. Get them from https://dashboard.pubnub.com.