add a link to player parameters example which has been missed

Author: ginpei

index.html

@@ -12,6 +12,7 @@ <h2>Demos</h2>
 			<li><a href="examples/player.html">Player</a></li>
 			<li><a href="examples/full-player.html">Full Player</a></li>
 			<li><a href="examples/full-player.compat.html">Full Player (IE 7+)</a></li>
+			<li><a href="examples/playervars.html">Player Parameters</a></li>
 			<li><a href="examples/html5video.html">HTML5 Video</a></li>
 		</ul>
 		<h2>Codes</h2>