SciTools/cartopy — pull request #503 by dkillick (2014-10-28 14:20:33+00:00)
Title: Add Mapbox tiles retrieval

Adds a class for retrieving mapbox tiles.

This class looks a little different to the other tile classes that inherit from `GoogleTiles` because Maptiles' approach to map tile provision is user oriented, so a given user's API access token and an ID for a map that they have created needs to be supplied.