Philips, maker of the Hue smart bulb, has tweeted a concept prototype showing Hue being used within an iOS 8 widget. The concept shows the widget within Notification Center — a user could simply swipe down to change the lighting in a room set up with Hue bulbs. This is a concept prototype to show the use of extensions to provide access to hue from the notification centre! pic.twitter.com/xC92LAgVfq— Philips Hue Dev (@philipshuedev) June…