Fixes minor rubocop offense

athityakumar · mrkn · commit ff7cb07fdad9 · 2017-12-07T15:27:06.000+09:00
diff --git a/daru-io.gemspec b/daru-io.gemspec
@@ -33,5 +33,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'simplecov'
   spec.add_development_dependency 'webmock'
   spec.add_development_dependency 'yard'
+
   spec.add_development_dependency 'guard-rspec' if RUBY_VERSION >= '2.2.5'
 end
