Update README.md

Author: jclusso

README.md

@@ -145,12 +145,6 @@ After checking out the repo, run `bin/setup` to install dependencies. Then, run
 `rake test` 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