PostgresDescribe AC4: a minimal Plug.Conn clone to handle 404s

AC5 Adding EEx templates to a Cowboy web server

Building the Alchemist.Camp website, Part 5.

Today, we added ability to dynamically render and serve up EEx template files, without requiring a restart of the web server. In the process of building this, it was convenient to flesh out our minimal clone of Plug.Conn a little bit.

https://youtu.be/hjXewfWuddY