Show HN: Ruby gem for slack sign-ins in Rails

Hi there!

Over the past year, my team has built a number of Slack applications for internal tools, demos, and for fun. We found ourselves writing the same OmniAuth code over and over again, so we decided to try and make it a bit easier for ourselves, and hopefully others too!

We were inspired by Basecamp's google_sign_in gem (https://github.com/basecamp/google_sign_in), and our goal was to make something that would let us integrate "Sign in with Slack" into our Rails apps:

  - with minimal configuration
  - as quickly as possible
  - without sacrificing on long-term stability and maintainability

We recently open-sourced this on GitHub as a gem, and I also made a short getting started video (my first one! :D). I'd love to hear what people think!

GitHub repo: https://github.com/TEECOM/slack_sign_in Getting started video: https://vimeo.com/387819353