added, mailgun, sidekiq, sentry
bundle installed paratropper
relook at lessons, reimplemented sidekiq and procfile
Added unicorn
added deploy.rake
removed comma from deploy.rake
removed deliver from invitation_controller
added admin, file upload, videos and feature test
Merge pull request #3 from chickensmitten/sidekiq-and-redis

2nd half of Month 3, Week 5