This is to implement a service endpoint for returning the current trending articles, in the form of a simple JSON list. The definition of "trending" is TBD.
(presumably should support a lang= parameter)
Current iOS most-read title fetcher: https://github.com/wikimedia/wikipedia-ios/blob/cd72473f6b162ca3036682ae483c00e6c1f36ffd/Wikipedia/Code/WMFMostReadTitleFetcher.m