Create a page detailing the most recent changes.

Adding "no_date: true" to the YAML front-matter of a page will prevent
that page from appearing in the list of recent changes.  This is useful
for pages that will have uninteresting changes like the top level index
page.
This hook is not needed.
Update to new version of rack-jekyll.

Don't re-render the site every time Rack is restarted.
Merge pull request #15 from candlepin/awood/whats-new

Create a page detailing the most recent changes.