I got the following error when I ran `rake test` in Cygwin:
```
rake aborted!
This Rakefile requires a Bundler environment. Invoke as: bundle exec rake test.
/cygdrive/c/Users/eburns/Dev/VWF-Headless-QUnit/support/build/utility.rake:35:in
 `block (2 levels) in <top (required)>'
Tasks: TOP => test => utility:bundler
(See full trace by running task with --trace)
```
`bundle exec rake test` worked fine.