Rakefile in ogp-0.4.0 vs Rakefile in ogp-0.5.0

@@ -1,6 +1,9 @@
 require 'bundler/gem_tasks'
+require 'rubocop/rake_task'
 require 'rspec/core/rake_task'
 
-RSpec::Core::RakeTask.new('spec')
+RuboCop::RakeTask.new(:rubocop)
 
-task default: :spec
+RSpec::Core::RakeTask.new(:test)
+
+task default: %i(rubocop test)