[WIP] Faraday

@jcwilk Another proof of concept...

I created a Faraday adapter using crystal lake. I'm not sure this is the best strategy for the longterm implementation, but it seems to work.
Finally had a chance to read through this. I think we have the same ideas except a disconnect on what crystal_lake is. My intention for it is to simply be an HTTP client replacement. I'm expecting to build a separate lumos_rails HAL API client gem using Faraday in a later step.