beaker will add the js module automatically to requirejs.yml

VERIFY:

- use this version beaker inside gonzo (in gemfile change to -> `gem 'beaker', path: '~/projects/beaker'`)
- generate test site `rails g beaker:marketing test-site-name`
- inspect `config/requirejs.yml` and make sure new site is added to modules as below:

```
modules:
  - name: 'new-site-js-module/new-site-js-module'
```