rails/rails — pull request #4779 by bsodmike (2012-01-31 07:03:53+00:00)
Title: Update comment in Gemfile re Unicorn (minor clarification)

As per my commit message

> clarification to prevent confusing newbies; Passenger/Unicorn are app servers, Apache/Nginx are the web servers along with thin a la Heroku etc.

Thanks!