title: Ruby on Rails uncapitalize first letter
body: <p>I'm running Rails 2.3.2.</p>
  
  <p>How do I convert <code>"Cool"</code> to <code>"cool"</code>? I know <code>"Cool".downcase</code> works, but is there a Ruby/Rails method that does the opposite of <code>capitalize</code>, i.e., <code>uncapitalize</code> or <code>decapitalize</code>?</p>