title: Automatic code quality tool for Ruby?
body: <p>One thing I really miss about Java is the tool support.  FindBugs, Checkstyle and PMD made for a holy trinity of code quality metrics and automatic bug checking.  </p>
  
  <p>Is there anything that will check for simple bugs and / or style violations of Ruby code?  Bonus points if I can adapt it for frameworks such as Rails so that Rails idioms are adhered to.</p>