* Checkout master: `git checkout master`.
* Get latest: `git pull --rebase origin master`
* Bump version number in `lib/gnarails/version.rb`.
* Update the [CHANGELOG](CHANGELOG.md), moving the current release work to under the version number.
* Create a commit, including the version number in the commit message: `git add
  --all && git commit -m "Version x.y.z"`.
* Push the release to RubyGems: `rake release`.
* Check the RubyGems [twitter account](https://twitter.com/rubygems) to publicize the release.