(maint) update instructions for manual releases

Author: DavidS

README.md

@@ -340,19 +340,16 @@ Future possibilities:
 * [Multiple Providers](https://tickets.puppetlabs.com/browse/PDK-530)
 * [Commands API](https://tickets.puppetlabs.com/browse/PDK-847)
 
-## Development
-
-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 tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
-
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/puppetlabs/puppet-resource_api.
 
 ### Cutting a release
 
-To cut a new release, from a current `master` checkout:
+In some cases we need to manually cut a release outside of the regular puppet
+agent process.
+
+To do so, follow these instructions from a current `master` checkout:
 
 * Start the release branch with `git checkout -b release-prep`
 * Update `lib/puppet/resource_api/version.rb` to the new version