added jquery-dependencies to knit header.

misc/spin.R

@@ -70,6 +70,10 @@ cssHeader='
       max-width: 90%;
   }
 </style>
+
+<link rel="stylesheet" type="text/css" href="http://cdn.datatables.net/1.10.4/css/jquery.dataTables.css">
+<script type="text/javascript" charset="utf8" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
+<script type="text/javascript" charset="utf8" src="http://cdn.datatables.net/1.10.4/js/jquery.dataTables.js"></script>
 '
 
 ## custom title http://stackoverflow.com/questions/14124022/setting-html-meta-elements-with-knitr