Does anyone have any ideas on how to implement one?

Yes, many people do. Many others just need to google it.

For the record: I've been trying, on and off, to set up a development environment for PB for a while now, but always kept getting error'd because of version inconsistencies. But that was before I knew of Bundler. I'll try again in the near future.

Then again, I'm just starting out with rails and I have other things to do with my time, so don't expect any miracles.

EDIT: Retraction was accidental.