Start flushing out expanded specs (work in progress)
Wrap up Gemfile module specs
Flush out runtime module specs, reorg runtime module a bit
Flush out system module specs, small tweaks to system module
Move bundler_ext_spec to integration_spec
Small tweaks/fixes to gemfile spec
Add specs for bundler_ext modules

Rounds out specs for bundler_ext
Merge pull request #16 from movitto/update_specs

Flush out all bundler_ext specs