Workaround deployment for Github Pages using custom plugins

@see
http://ixti.net/software/2013/01/28/using-jekyll-plugins-on-github-pages.html
Merge branch 'source' of github.com:petemcw/petemcw.github.com into source

* 'source' of github.com:petemcw/petemcw.github.com:
  Workaround deployment for Github Pages using custom plugins

Conflicts:
	Rakefile