corrects styles issues

.rubocop.yml

@@ -1,6 +1,3 @@
-inherit_from: .rubocop_todo.yml
-
-
 AllCops:
   Include:
     - Rakefile
@@ -39,3 +36,7 @@ Style/ClassAndModuleChildren:
 
 Style/Documentation:
   Enabled: false
+
+Style/GlobalVars:
+  Exclude:
+    - 'config/initializers/redis.rb'

Gemfile

@@ -7,11 +7,11 @@ git_source(:github) do |repo_name|
   "https://github.com/#{repo_name}.git"
 end
 
-gem 'rails', '~> 5.1.4'
 gem 'pg', '~> 0.18'
 gem 'puma', '~> 3.7'
-gem 'webpacker'
+gem 'rails', '~> 5.1.4'
 gem 'redis-rails'
+gem 'webpacker'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
@@ -23,9 +23,9 @@ end
 
 group :development do
   gem 'listen', '>= 3.0.5', '< 3.2'
-  gem 'web-console', '>= 3.3.0'
   gem 'spring'
   gem 'spring-watcher-listen', '~> 2.0.0'
+  gem 'web-console', '>= 3.3.0'
 end
 
 ruby '2.4.3'

config/environments/production.rb

@@ -28,8 +28,8 @@
   # Apache or NGINX already handles this.
   config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
   config.public_file_server.headers = {
-      'Cache-Control' => 'public, max-age=31536000'
-    }
+    'Cache-Control' => 'public, max-age=31536000'
+  }
 
   # Compress JavaScripts and CSS.
   # config.assets.js_compressor = Uglifier.new(harmony: true)
@@ -64,11 +64,9 @@
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
-  if ENV['REDISCLOUD_URL']
-    config.cache_store = :redis_store, ENV['REDISCLOUD_URL'], { expires_in: 1.day }
-    config.action_controller.enable_fragment_cache_logging = true # you can remove this line once you made sure caching works on Heroku
-  end
-
+
+  config.cache_store = :redis_store, ENV['REDISCLOUD_URL'], { expires_in: 1.day } if ENV['REDISCLOUD_URL']
+
   # Use a real queuing backend for Active Job (and separate queues per environment)
   # config.active_job.queue_adapter     = :resque
   # config.active_job.queue_name_prefix = "todomvc_stimulus_#{Rails.env}"

config/initializers/redis.rb

@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 $redis = Redis.new
-$redis = Redis.new(url: ENV["REDISCLOUD_URL"]) if ENV["REDISCLOUD_URL"]
+$redis = Redis.new(url: ENV['REDISCLOUD_URL']) if ENV['REDISCLOUD_URL']