added sign_up_user command; changed .flatten! calls to .flatten in db
Merge branch 'master' of https://github.com/DavidColby/makerspots
Merge branch 'master' of https://github.com/DavidColby/makerspots
Merge branch 'master' of https://github.com/DavidColby/makerspots
SignUpUser command does... what it says. pretty much.
Implement Sign In User command. Tests pass.
Merge branch 'master' of https://github.com/DavidColby/makerspots
modify db.get_checkins_by_user
created checkin_user command