Add feature -- invite a friend
Extract Tokenable logic to model concerns
Add MailGun addon to Heroku
Install Sidekiq, move send_invitation_email to background job
Add Unicorn web server
Add Sentry for production error modeling
Add Paratrooper gem
Update Paratrooper gem
Update README
Merge pull request #5 from cullenjett/mod-5

End of week 5