Rakefile in gris-0.1.3 vs Rakefile in gris-0.1.4

@@ -1,11 +1,14 @@
 # encoding: utf-8
 
-require 'rake/testtask'
 require 'bundler/gem_tasks'
+require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
-Rake::TestTask.new(:spec) do |test|
-  test.libs << 'lib' << 'spec'
-  test.pattern = 'spec/**/*_spec.rb'
+RSpec::Core::RakeTask.new
+
+desc 'Run RuboCop'
+RuboCop::RakeTask.new(:rubocop) do |task|
+  task.fail_on_error = true
 end
 
-task default: :spec
+task default: [:rubocop, :spec]