GUACAMOLE-346: Add "paused" notification to example player.

doc/guacamole-playback-example/src/main/webapp/index.html

@@ -28,7 +28,7 @@
     <body>
 
         <!-- Guacamole recording player -->
-        <div class="player">
+        <div id="player" class="paused">
 
             <!-- Player display -->
             <div id="display">
@@ -39,6 +39,9 @@
                             <button id="cancel-seek">Cancel</button>
                         </p>
                     </div>
+                    <div class="paused-notification">
+                        <p>Paused.</p>
+                    </div>
                 </div>
             </div>