adds unicorn to gem file, includes procfile per instructions on heroku that sets unicorn as the server
runs bundle and updates gemfile.lock
Adds unicorn.rb config file
* Follows instructions on deploy a rails app using unicorn on heroku at https://devcenter.heroku.com/articles/rails-unicorn
Merging from master
Merge branch 'master' of https://github.com/opleban/Snack_Overflow into Ori
Merge pull request #16 from opleban/Ori

Ori