title: Shortcut to comment out a block of code with sublime text
body: <p>I want to comment out a block of code in sublime text.</p>
  
  <p>I see it in RailsCasts, but don't think he uses sublime text ... to do the following ...</p>
  
  <pre><code>if (uncommented)
    some uncommented example
    # if (commented) 
    #   some commented example code
    # end
  end
  </code></pre>
  
  <p>Is there a shortcut in sublime text that I can use to insert the block of #'s?</p>