Button demos: Fix selector since demo wrapper div was removed

Author: kborchers

demos/button/icons.html

@@ -11,7 +11,7 @@
 	<link rel="stylesheet" href="../demos.css">
 	<script>
 	$(function() {
-		$( ".demo button:first" ).button({
+		$( "button:first" ).button({
 			icons: {
 				primary: "ui-icon-locked"
 			},