add github link

Author: brandonmwest

index.html

@@ -10,6 +10,7 @@
         <div class="container">
             <h1>Amazon Transcribe WebSocket API - Sample Application</h1>
             <p class="description">
+                <small><a href="https://github.com/aws-samples/amazon-transcribe-websocket-static">Check out the code on GitHub</a></small>
                 This application demonstrates real-time transcription using 
                 <a href="https://aws.amazon.com/transcribe/">Amazon Transcribe's</a> WebSocket API.
                 </br><br/>