Pessimistically lock down all gem deps
Check in `Gemfile.lock` to prevent ‘works on my machine’

It is always preferably to check in `*.lock` files on application repos.
Check in `Berksfile.lock` to prevent ‘works on my machine’

It is always preferably to check in `*.lock` files on application repos.
Merge pull request #1 from opscode/schisamo/updates-for-ci

Updates for CI