Remove 'pay' from the reddit url

Hi, MediaCrush

Reddit has finally added support full-site HTTPS so it's no longer necessary to use the subdomain 'pay'.
Reddit will start to automatically redirect users of 'pay' soon but it is still good to send users to the right URL.

You can read more here: http://www.redditblog.com/2014/09/hell-its-about-time-reddit-now-supports.html