Rename Rubocop

Rakefile

@@ -46,6 +46,8 @@ task :test do
   GEM_PATHS.each do |g|
     Dir.chdir("#{File.join(ROOT, g)}") { sh "#{Gem.ruby} -S rake test" }
   end
+
+  Rake::Task['rubocop'].invoke
 end
 
 desc 'Run specs for all middleman gems'
@@ -55,16 +57,11 @@ task :spec do
   end
 end
 
-begin
 require 'rubocop/rake_task'
-  if defined?(Rubocop)
 desc 'Run RuboCop to check code consistency'
-    Rubocop::RakeTask.new(:rubocop) do |task|
+RuboCop::RakeTask.new(:rubocop) do |task|
   task.fail_on_error = false
 end
-  end
-rescue LoadError
-end
 
 desc 'Run tests for all middleman gems'
 task default: :test