Taken from PR 199817 with minor modifications
Proposed commit message:
new port: security/rubygem-doorkeeper Doorkeeper is an OAuth 2 provider for Rails and Grape applications WWW: https://github.com/doorkeeper-gem/doorkeeper PR: 199817 Submitted by: Torsten Zuehlsdorff <ports@toco-domains.de> Approved by: swills (mentor), mat (mentor)