message: Minor update to sounds example.
diff: @@ -76,7 +76,7 @@ impl event::EventHandler for MainState {
  graphics::queue_text(
  ctx,
  - &graphics::Text::new("Press number keys a sound, or escape to quit."),
  + &graphics::Text::new("Press number keys 1-6 to play a sound, or escape to quit."),
  na::Point2::origin(),
  None,
  );
  