mapnik/node-mapnik — pull request #335 by tomhughes (2014-10-22 11:24:10+00:00)
Title: adapt to upcoming mapnik-vector-tile

This just a cherry pick of e01a71ee787c9b24eda03e1390ab5367e6641dbe from master to make the 1.x branch work with the new 0.6.0 release of mapnik-vector-tile.