I've put it up at https://th3s3cr3tag3nt.blogspot.com although it still needs a bit of work, I'll upload the video of it working when I can. Let me know of any difficulties or anything that's not clear and I'll update it. Apart from some funky dnsmasq config the main area i deviated from the other tutorials was in using ethernet to configure the Pi, but using the usb0 interface for the attack.