update readme for release process (#10)

Author: martinemde

README.md

@@ -116,7 +116,7 @@ QueryPackwerk.anonymous_violation_counts_for("my_pack", threshold: 3)
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
 
-To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and the created tag, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, push a PR with the label for the version you want, like 'major', 'minor' or 'patch'. When the PR is merged, the version will be automatically released to RubyGems.
 
 ## Contributing