Rakefile in omniauth-mlh-1.0.0 vs Rakefile in omniauth-mlh-1.0.1

@@ -1,8 +1,12 @@
 #!/usr/bin/env rake
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
 RSpec::Core::RakeTask.new
+RuboCop::RakeTask.new
 
 desc 'Run specs'
 task default: :spec