I'm using Pacer in an isolated environment using `bundler install --path=vendor --binstubs`, which is a conventional way of "vendorizing" the gem, that's why I added it there, I believe this could come handy for other people too. For more references: http://bundler.io/v1.3/bundle_install.html

If you think this makes sense, I would also recommend putting "bin" on the list, as far as I can tell the files inside it are all generated by bundler, and they should be generated by the end user.