Example Phoenix 1.3 umbrella apps

Does anyone have any good links to phoenix 1.3 umbrella applications that are leveraging Contexts? I’ve seen some open source applications that have been converted from 1.2 to 1.3, but none are using Contexts. I’ve been learning about contexts but I often find reading code to be an excellent source of learning and right now I haven’t found many examples. The phoenix guide touches on contexts as it discusses making a light weight cms/blog, however I couldn’t find a GitHub repo that paired up with the guide.