diff --git a/Gemfile b/Gemfile
index 107563a..d1fed5a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,53 +1,48 @@
-source 'https://rubygems.org'
-git_source(:github) { |repo| "https://github.com/#{repo}.git" }
-
 ruby '2.5.1'
 
-# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+source 'https://rubygems.org'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'.
 gem 'rails', '~> 5.2.1'
-# Use postgresql as the database for Active Record
+# Use postgresql as the database for Active Record.
 gem 'pg', '>= 0.18', '< 2.0'
-# Use Puma as the app server
+# Use Puma as the app server.
 gem 'puma', '~> 3.11'
-# Use SCSS for stylesheets
+# Use SCSS for stylesheets.
 gem 'sass-rails', '~> 5.0'
-# Use Uglifier as compressor for JavaScript assets
+# Use Uglifier as compressor for JavaScript assets.
 gem 'uglifier', '>= 1.3.0'
-# See https://github.com/rails/execjs#readme for more supported runtimes
+# See https://github.com/rails/execjs#readme for more supported runtimes.
 # gem 'mini_racer', platforms: :ruby
-
-# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
+# 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
+# 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', '~> 4.0'
-# Use ActiveModel has_secure_password
+# Use ActiveModel has_secure_password.
 # gem 'bcrypt', '~> 3.1.7'
-
-# Use ActiveStorage variant
+# Use ActiveStorage variant.
 # gem 'mini_magick', '~> 4.8'
-
-# Use Capistrano for deployment
+# Use Capistrano for deployment.
 # gem 'capistrano-rails', group: :development
-
-# Reduces boot times through caching; required in config/boot.rb
+# Reduces boot times through caching; required in config/boot.rb.
 gem 'bootsnap', '>= 1.1.0', require: false
 
 group :development, :test do
-  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+  # Call 'byebug' anywhere in the code to stop execution
+  # and get a debugger console.
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
 end
 
 group :development do
-  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
+  # Access an interactive console on exception pages or by calling 'console'
+  # anywhere in the code.
   gem 'web-console', '>= 3.3.0'
   gem 'listen', '>= 3.0.5', '< 3.2'
-  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+  # Spring speeds up development by keeping your application running
+  # in the background. Read more: https://github.com/rails/spring.
   gem 'spring'
   gem 'spring-watcher-listen', '~> 2.0.0'
 end
-
-
-# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]