Fix the version of nanoc to one that exists
Update link to sbt-ghpages plugin
Remove references to schoir plugin

The schoir plugin is no longer available on the Typesafe Github repo, and can't be found easily with google.
Merge pull request #41 from ollyw/master

Update broken links on the Community Plugins documentation page
reference sbt-clojure in the generator plugins
Merge pull request #43 from Geal/add-sbt-clojure

reference sbt-clojure in the generator plugins
change a better title
fix typo
Merge remote-tracking branch 'upstream/master'

 the commit.