So, here is what I have been doing for 6 months to watch it still, because fuck Hulu and their ads (inb4 "they have ad-free options for more $$$):
1. Have Netflix account
2. Get a netflix VPN subscription - I personally recommend netflixvpn.com, having tried only vpntraffic.com otherwise, but there are plenty of good VPNs out there.
3. Install VPN software and choose UK from the country list. It will take seconds to connect.
4. Load up Netflix in your browser and enjoy Always Sunny!