[Radiant] Extension Docs

[Tim Gossett]

I forgot to point out that the extension includes routes for the
public-facing part of the site directory. That block should look like
this:

define_routes do |map|
  map.with_options(:controller => 'admin/site') do |controller|
    controller.site_index   'admin/sites',            :action => 'index'
    controller.site_edit    'admin/sites/edit/:id',   :action => 'edit'
    controller.site_new     'admin/sites/new',        :action => 'new'
    controller.site_remove  'admin/sites/remove/:id', :action => 'remove'
  end
end

--
Tim