```ruby
class AppDelegate
  include CDQ

  def application(application, didFinishLaunchingWithOptions:launchOptions)
    cdq.setup
    window.makeKeyAndVisible
    window.rootViewController = navigation_controller
  end

  def window
    @window ||= \
      UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
  end

  def timers_controller
    @timers_controller ||= \
      TimersController.alloc.initWithNibName(nil, bundle: nil)
  end

  def navigation_controller
    @navigation_controller ||= \
      UINavigationController.alloc.initWithRootViewController(timers_controller)
  end
end
```

Rename controllers per iOS naming conventions.
user
```ruby
class AppDelegate
  include CDQ

  def application(application, didFinishLaunchingWithOptions:launchOptions)
    cdq.setup
    window.makeKeyAndVisible
    window.rootViewController = navigationController
  end

  def window
    @window ||= \
      UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
  end

  def timersController
    @timersController ||= \
      TimersController.alloc.initWithNibName(nil, bundle: nil)
  end

  def navigationController
    @navigationController ||= \
      UINavigationController.alloc.initWithRootViewController(timersController)
  end
end
```
assistant