production settings

Gemfile

@@ -5,30 +5,36 @@ git_source(:github) do |repo_name|
   "https://github.com/#{repo_name}.git"
 end
 
-
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.0.7'
-# Use sqlite3 as the database for Active Record
-gem 'sqlite3'
+
 # Use Puma as the app server
 gem 'puma', '~> 3.0'
+
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
+
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
+
 # Use CoffeeScript for .coffee assets and views
 gem 'coffee-rails', '~> 4.2'
+
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'therubyracer', platforms: :ruby
 
 # Use jquery as the JavaScript library
 gem 'jquery-rails'
+
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
 gem 'turbolinks', '~> 5'
+
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.5'
+
 # Use Redis adapter to run Action Cable in production
-# gem 'redis', '~> 3.0'
+gem 'redis', '~> 3.0'
+
 # Use ActiveModel has_secure_password
 gem 'bcrypt', '~> 3.1.7'
 
@@ -50,7 +56,15 @@ gem "font-awesome-sass", '~> 5.0.13'
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
 
+group :production do
+  # Use a postgres database in production.
+  gem 'pg', '~> 0.18'
+end
+
 group :development, :test do
+  # Use SQLite in development and test.
+  gem 'sqlite3'
+
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platform: :mri