README.md in sinatra-validation-0.3.1 vs README.md in sinatra-validation-0.3.2

- old
+ new
@@ -87,9 +87,16 @@
 
 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).
 
+### Test
+
+```bash
+$ bundle install
+$ rake
+```
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/IzumiSy/sinatra-validation. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
 
 