Rakefile in metastore-0.3.0 vs Rakefile in metastore-0.4.0

@@ -1,4 +1,8 @@
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
-RSpec::Core::RakeTask.new('spec')
+RSpec::Core::RakeTask.new(:spec)
+RuboCop::RakeTask.new
+
+task default: [ :rubocop, :spec ]