Deploying with CircleCI

In an attempt to be a bit more professional about this website, it's now being deployed via CircleCI 🎉 I've been looking at it as part of my new job at Red Badger, more on that hopefully soon...

I mostly just followed the Jekyll and CircleCI docs. The actual deployment to the server is done with the net/ftp ruby library, since using the ftp command line tool didn't allow for conveniently copying a directory tree structure.