Included the gemfile.
Set up Sidekiq testing to inline.
Sent welcome emails asynchronously.
Included the foreman gem.
Procfile. (web, redis, sidekiq)
Added a Procfile.development for development environment.
Included the unicore gem as production server.
Added the confirguation for unicorn.
Started sidekiq on unicorn configuration.
Merge pull request #10 from HenrykChiu/week_5_code_review_2

Week 5 code review 2