Added Redis store for keys. Renamed some files.

Updated README with instructions regarding Redis.
Added Redis store for keys. Renamed some files.

Updated README with instructions regarding Redis.
Merge branch 'keys' of https://github.com/hackersatbrown/api-morning-mail into keys
Refactored test helpers into separate repo.
Improved dependency tracking in Makefile.
update README
Update to match testify interface
fix start script in package.json
Merge pull request #15 from hackersatbrown/keys

Added Redis store for keys
Merge branch 'master', remote-tracking branch 'origin'
Merge branch 'master' into posts
Adapting posts tests to use testify.