http://serverspec.org/
http://serverspec.org/resource_types.html
https://github.com/mizzy/serverspec
http://serverspec.org/advanced_tips.html
chefdk/embedded/lib/ruby/gems/2.3.0/gems/serverspec-2.37.2


http://arlimus.github.io/articles/custom.resource.types.in.serverspec/
http://www.rubydoc.info/github/serverspec/serverspec/Serverspec

https://github.com/mizzy/specinfra

https://github.com/jantman/serverspec-extended-types
https://github.com/jantman/serverspec-extended-types/blob/master/lib/serverspec_extended_types/http_get.rb
http://www.rubydoc.info/gems/serverspec-extended-types/#http_get