Changeset 3289 for sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/api/routes/class-popular-categories.php

Plugin Directory: First swipe at handlers for api.wordpress.org/plugins/info/*.
The API handlers are designed to be stand-alone scripts which run only with an object cache for caching, When cached data is unavailable, WordPress is included to fetch the data from a rest api endpoint.

See #1579