We'll respond shortly.
Do people put bundler in the Gemfile?
Yes. Bundler is smart enough to omit it from the cache. It does, however, still follow the rules for version. We recommend using
~> 1.0.0 as the version string, because 1.x is supposed to be backwards-compatible with the current Gemfile format.
If you instead use
= 1.0.0 and your managed hosting environment updates bundler to something more recent, things will ASPLODE.