Tina Cloud Alpha Release

Hello HN, we're happy to share that our headless CMS, Tina Cloud, is now in public alpha.

Initially, we're targeting next.js sites that store content in Markdown/JSON in GitHub.

If you're looking for a starter site to test out Tina Cloud, fork this repo and follow the readme: https://github.com/tinacms/tina-cloud-starter

Would love to hear any feedback.