Rakefile in mopti-0.2.2 vs Rakefile in mopti-0.2.3

@@ -1,6 +1,12 @@
-require "bundler/gem_tasks"
-require "rspec/core/rake_task"
+# frozen_string_literal: true
 
+require 'bundler/gem_tasks'
+require 'rspec/core/rake_task'
+
 RSpec::Core::RakeTask.new(:spec)
 
-task :default => :spec
+require 'rubocop/rake_task'
+
+RuboCop::RakeTask.new
+
+task default: %i[rubocop spec]