Gemfile in grape-roar-0.4.0 vs Gemfile in grape-roar-0.4.1

@@ -1,17 +1,20 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gemspec
 
 group :development do
-  gem 'rake', '~> 10.5.0'
+  gem 'appraisal', '2.2.0'
 end
 
 group :test do
-  gem 'rspec', '~> 3.1'
   gem 'rack-test'
+  gem 'rspec', '~> 3.1'
 end
 
 group :development, :test do
-  gem 'rubocop', '0.28.0'
   gem 'nokogiri', '1.6.3.1'
+  gem 'rake', '~> 10.5.0'
+  gem 'rubocop', '0.49.1'
 end