Rakefile in chronicle-etl-0.3.1 vs Rakefile in chronicle-etl-0.4.0

@@ -1,6 +1,8 @@
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
-
 RSpec::Core::RakeTask.new(:spec)
 
-task :default => :spec
+require 'yard'
+YARD::Rake::YardocTask.new
+
+task default: :spec