Taken from PR 199921 with minor modifications.
Proposed commit message:
new port: security/rubygem-attr_required This gem provides implementations of attr_required and attr_optional (like attr_accessor) for Ruby. WWW: https://github.com/nov/attr_required PR: 199921 Submitted by: Torsten Zuehlsdorff <ports@toco-domains.de> Approved by: swills (mentor), mat (mentor)