chore: update GitHub branch references to use HEAD

sendgrid / sendgrid-ruby

The Official Twilio SendGrid Led, Community Driven Ruby API Library

https://sendgrid.com

MIT License

621 stars 324 forks source link

Closed thinkingserious closed 4 years ago

thinkingserious commented 4 years ago

[x] I acknowledge that all my contributions will be made under the project's license