Problem: A big chunk of both the readme and the startup output is
dedicated to configuration, which feels to me to be focused on
developers and advanced users rather than beginners who just want to try
using Oasis.
Solution: Move readme configuration info to its own file and hide all
config output (except one line) behind `--debug`. While doing this I
noticed that we're `require()`ing a few modules that we don't need
before setting `process.env.DEBUG`, which I've reorganized so that we
don't accidentally disable debug mode for those modules.
2e7cb4ad66
