An hour with Safari Content Blocker in iOS 9

I took a little time out today to watch WWDC Session 511 to learn about how Safari Content Blocking will work in iOS 9 and OS X El Capitan. After an hour, I had a little concept app running. I wont really explain the technical details of how the extensions work or how to create them, that is better done by watching the WWDC Session video directly, but I will say its frightfully easy and the code I used for the blocker detailed below is at the bottom of this page.I'm not complaining.