title: Swift println command does not output in console
body: <p>Using a playground file in Xcode 6 beta, I am trying to get an output in the console for the println command. I have written <code>println("test")</code>, opened the Assistant Editor <em>(View\Assistant Editor\Show Assistant Editor)</em> and see that little window named "Console output", but still I get nothing. I have also tried to close and restart Xcode.</p>
  
  <p>What am I doing wrong?</p>