peek/peek — pull request #57 by lucasmazza (2014-05-09 18:07:14+00:00)
Title: Depend on `railties` and not `rails`.

The `rails` gem is a meta gem to glue all the other ones together
and shouldn't be used as a runtime dependency of other gems.
This way Peek won't bring `activerecord` or `arel` as dependency
on applications that aren't using Active Record.