Added 'experimental' banner

Change-Id: I3137e06ffd9180847e8862ce9ab25d161f2e973d
diff --git a/plugin/templates/export.html b/plugin/templates/export.html
index f1bb82d..0edd40c 100644
--- a/plugin/templates/export.html
+++ b/plugin/templates/export.html
@@ -7,9 +7,10 @@
 
     <!-- This is only for testing purposes -->
     <script src="http://localhost:64543/js/korap-plugin-0.2.js"></script>
-    <link type="text/css" rel="stylesheet" href="http://localhost:64543/css/kalamar-plugin-0.2.css?x=4" />
+    <link type="text/css" rel="stylesheet" href="http://localhost:64543/css/kalamar-plugin-0.2.css?x=7" />
   </head>
   <body>
+    <div class="banner" data-note="Experimental"></div>
     <h1>Export: <code id="export-query"></code></h1>
     <section>
       <form id="frmid" class="form-table" action="http://localhost:7777/export" method="POST">