TypeError: Can't find plugin for 'federatedWiki'

Found when browsing more-about-browsing-and-linking-sites
on a freshly installed git master of node.js wiki
server.

Imported plugins/federatedWiki from
5dec8c3 of WardCunningham/Smallest-Federated-Wiki.
Merge pull request #33 from saper/07214b1

Fix TypeError: Can't find plugin for 'federatedWiki'