bundle package
Locks and then caches all of the gems into vendor/cache
$ bundle package [--no-prune]
Options:
--no-prune: Don't remove stale gems from the cache.
The package command will copy the .gem files for every gem in the bundle into the
directory ./vendor/cache. If you then check that directory into your source
control repository, others who check out your source will be able to install the
bundle without having to download any additional gems.
Edit this document on GitHub if you caught an error or noticed something was missing.