Document environment variables

[rbroth]

The readme doesn't make it clear that you have to create a .env file, nor what the different variables are

[bgsandan]

True.  In the immediate short term, refer to .env.example and .env.defaults but yes, better documentation is needed

[rbroth]

I am, and the db names are relatively self-explanatory, but not sure what (if anything) to put for the github and redis variables

[bgsandan]

If you aren't testing the /feedback endpoints they can probably be blank/empty strings

[bgsandan]

At some point, will probably split that bit off from the core data api