You are of course welcome to download the javascript libraries and host them locally. Until we do our first proper release, you can place the contents of https://github.com/pelagios/pelagios-widgets/tree/master/build at http://<LOCATION>/ then you then need to use the following javascript instead:
<script type="text/javascript" src="http://<LOCATION>/lib/require.js"></script> <script type="text/javascript" src="http:/<LOCATION>/place.js"></script>
<script type="text/javascript" src="http://<LOCATION>/lib/require.js"></script> <script type="text/javascript" src="http:/<LOCATION>/searcg.js"></script>