Adds sidekiq gem

Author: adaam2

backend/Gemfile

@@ -5,28 +5,14 @@ git_source(:github) do |repo_name|
  "https://github.com/#{repo_name}.git"
 end
 
-
-# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.1.5'
-# Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
-# Use Puma as the app server
 gem 'puma', '~> 3.7'
 
 gem 'devise_token_auth'
 gem 'omniauth'
 gem 'hashie', '~> 3.5.7'
-
-# Use Redis adapter to run Action Cable in production
-# gem 'redis', '~> 4.0'
-# Use ActiveModel has_secure_password
-# gem 'bcrypt', '~> 3.1.7'
-
-# Use Capistrano for deployment
-# gem 'capistrano-rails', group: :development
-
-# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
-# gem 'rack-cors'
+gem 'redis'
 
 group :development, :test do
  gem 'pry'

backend/Gemfile.lock

@@ -118,6 +118,7 @@ GEM
  rb-fsevent (0.10.3)
  rb-inotify (0.9.10)
  ffi (>= 0.5.0, < 2)
+ redis (4.0.1)
  responders (2.4.0)
  actionpack (>= 4.2.0, < 5.3)
  railties (>= 4.2.0, < 5.3)
@@ -170,6 +171,7 @@ DEPENDENCIES
  pry-rails
  puma (~> 3.7)
  rails (~> 5.1.5)
+ redis
  rspec
  spring
  spring-watcher-listen (~> 2.0.0)