Installing it is super simple, just toss this in your
gem 'sopablackout', :git => "email@example.com:jakemarsh/sopablackout.git"
Then open up your
routes.rb and mount the engine at a route, (obviously it probably makes sense to mount it to
"/" so your whole site is blacked out).
mount Sopablackout::Engine => "/"
Jeff really did an awesome job and 100% of the credit for anything you see here goes to him, I just needed it in Rails so I could use it on my site, so I thought I'd share.
You can see a preview of what this code will look like here: http://brdrck.me/sopa