Gemfile in mpd_client-0.0.6 vs Gemfile in mpd_client-0.1.0

@@ -1,8 +1,15 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in mpd_client.gemspec
 gemspec
 
-group :development do
+group :development, :test do
   gem 'pry'
+  gem 'rubocop'
+end
+
+group :test do
+  gem 'rspec'
 end