WIP on config refactor.
Refactor config.

Can now specify from `lein run` or uberjar.
Clean up. Just use -main now...

lein-ring doesn't really support any kind of sane way to provide
config from the command line, at least that I can tell.
Release 1.2.2.
Fix resource handling. Can't slurp the file, need the URL!
Release 1.2.3.
Fix requires.
Release 1.2.4.