Thanks for the feedback! Now that we've got the core deploy / rollback tooling in place, we're definitely looking for ways to plug into other common workflows (git, Dropbox, etc.). Stay tuned!
Git integration is on our roadmap. However, you can also set this up yourself now by adding your own git hook that calls 'firebase deploy' on push.
For more information, see the documentation for the commandline tool here: https://www.firebase.com/docs/command-line-tool.html