add noscript tag

index.html

@@ -62,7 +62,7 @@
 <ul id="history"></ul>
 
 <script>
-var player = document.getElementById('player'); 
+var player = document.getElementById('player');
 var rng  = Math.floor(Math.random() * 10000);
 player.src = player.src + '?nocache=' + rng;
 
@@ -81,6 +81,7 @@ ws.onmessage = function(msg){
 	}
 }
 </script>
+<noscript>Please enable javascript to use the audio player.</noscript>
 
 </body>
 </html>