Adding a skeleton for a Jekyll-based site.

This content was started using `bundle exec jekyll new --force .`.

See https://help.github.com/articles/using-jekyll-with-pages for more.

Some hints:

    * Run Jekyll locally via `bundle exec jekyll serve -w -D`;
      this runs a web server at localhost:4000 that auto-refreshes
      when content changes are detected, and that shows draft posts.

    * On OS X 10.9, install bundler first via the MacPorts ruby-20
      ruby binary (I had trouble getting the system ruby to install
      the `github-pages` gem -- iconv something-something).