bin/document_api => cannot load such file -- presenters/message_bus/service_binding_presenter

```
$ bundle exec bin/document_api
/Users/drnic/Projects/ruby/gems/cloudfoundry/cloud_controller_ng/lib/cloud_controller/app_stager_task.rb:1:in `require': cannot load such file -- presenters/message_bus/service_binding_presenter (LoadError)
	from /Users/drnic/Projects/ruby/gems/cloudfoundry/cloud_controller_ng/lib/cloud_controller/app_stager_task.rb:1:in `<top (required)>'
	from /Users/drnic/Projects/ruby/gems/cloudfoundry/cloud_controller_ng/lib/cloud_controller.rb:109:in `require'
	from /Users/drnic/Projects/ruby/gems/cloudfoundry/cloud_controller_ng/lib/cloud_controller.rb:109:in `<top (required)>'
	from bin/document_api:9:in `require'
	from bin/document_api:9:in `<main>'
```