Update demos to use the newest jQuery

demo/demo.html

@@ -6,7 +6,7 @@
   <meta name="viewport" content="width=device-width,initial-scale=1" />
   <link rel="stylesheet" href="../responsiveslides.css" />
   <link rel="stylesheet" href="demo.css" />
-  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
   <script src="../responsiveslides.min.js"></script>
   <script>
     $(function () {

demo/themes/themes.html

@@ -6,7 +6,7 @@
   <meta name="viewport" content="width=device-width,initial-scale=1" />
   <link rel="stylesheet" href="../../responsiveslides.css" />
   <link rel="stylesheet" href="themes.css" />
-  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
   <script src="../../responsiveslides.min.js"></script>
   <script>
     $(function () {