Rakefile in rambling-trie-1.0.3 vs Rakefile in rambling-trie-2.0.0

@@ -1,11 +1,15 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
 require 'rambling-trie'
 require_relative 'tasks/performance'
 require_relative 'tasks/serialization'
 require_relative 'tasks/ips'
 
 RSpec::Core::RakeTask.new :spec
+RuboCop::RakeTask.new :rubocop
 
 task default: :spec