Prototype simple end-to-end example

[oubiwann]

Let's get something working locally, just enough to pass data from one component to the next. Components:

• A container
• A REST server (written in LFE)
• A JS client
• An mdbook with example LFE code on one of its pages

Feature-level work for proof-of-concept:

• Try running in a docker instance #10 - a deployment approach and proof of concept (e.g., a container that could be deployed to AWS using ECS)
• Convert existing REST server to Nova #21 - a service, protocol, and proof of concept that could be used across *.lfe.io and from JS (e.g., REST & HTTP)
• Update existing try-lfe JS to use new Nova REST API #22 - update existing try-lfe JS to make sure we're moving in a good/supportable direction
• Investigate the level of effort for adding support for an "LFE eval service" in mdbook #20 - some JS hacking in mdbook's book.js to make sure we can properly render results from the REST service

We should be able to prove out a full set of round trips locally using Docker ... might have to do some hacking / tweaking for local CORS or cross-site scripting?