Rakefile in critic-0.1.1 vs Rakefile in critic-0.2.0

@@ -1,7 +1,15 @@
 # frozen_string_literal: true
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
 RSpec::Core::RakeTask.new(:spec)
 
 task default: :spec
+
+desc 'Run rubocop'
+task :rubocop do
+  task = RuboCop::RakeTask.new
+  task.patterns = ['lib/**/*.rb']
+  task
+end