title: A gem to describe purpose of gems in gemfile?
body: <p>I'm new to RoR and jumping into a big RoR project. The project uses a bunch of gems. In fact, the Gemfile.lock file, including dependencies, is 460 lines long. I was told the project went through several different developers, and that there may be a lot of cruft in there.</p>
  
  <p>Is there any way to generate a list of what each gem does? It's not exactly intuitive, especially with names like "capybara" and "cocaine" and "raindrops."</p>
  
  <ol start="2">
  <li>Is there any simple process to determine which gems are required?</li>
  </ol>