updated readme

Gemfile

@@ -45,18 +45,18 @@ group :development, :test do
   gem 'guard-shell'
 
   gem 'minitest-reporters'
-  gem 'rails-controller-testing'
   gem 'policy-assertions'
+  gem 'rails-controller-testing'
 
+  gem 'awesome_print'
+  gem 'binding_of_caller'
   gem 'byebug', platform: :mri
   gem 'pry-byebug'
   gem 'pry-rails'
-  gem 'binding_of_caller'
-  gem 'awesome_print'
 
+  gem 'brakeman'
   gem 'rubocop', '~> 0.42.0'
   gem 'simplecov', require: false
-  gem 'brakeman'
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem