The file rdfwidgets.js contains jQuery, jQuery UI, the Tabulator RDF Library, and the widget library all rolled into a single file. You can link to this package directly using script tags in your own page, like this:
<script src="http://dig.csail.mit.edu/2010/rdf-widgets/rdfwidgets.js"
type="text/javascript"></script>
Additionally, a default style class is provided which includes the necessary style for autocomplete menus and other aesthetically pleasing aspects of the library. All of these options can be overridden, but the style sheet can also be referenced statically in your pages, like this:
<link href="http://dig.csail.mit.edu/2010/rdf-widgets/style.css"
rel="stylesheet"
type="text/css"></script>
Information about running the current development version of the widget library is forthcoming.