Add documentation on testing
Add documentation on testing

iCHAIT/whats-fresh-api,iCHAIT/whats-fresh-api,osu-cass/whats-fresh-api,iCHAIT/whats-fresh-api,iCHAIT/whats-fresh-api,osu-cass/whats-fresh-api,osu-cass/whats-fresh-api,osu-cass/whats-fresh-api