Merge pull request #70 from auxesis/gh-pages

Make the website documentation reflect reality
Add CNAME record, to serve flapjack.io from gh pages
Merge branch 'gh-pages' of github.com:flpjck/flapjack into gh-pages
Upgrade invocation of jekyll
Upgrade config file for latest version of jekyll
Add dependencies for building the website locally
Update content with pointers to mailing list, wiki, bug tracker, etc
Add revised Flapjack logo