node-cpp-skel has `make format` now, which we need - refs https://github.com/mapnik/node-mapnik/issues/808 and https://github.com/mapnik/node-mapnik/pull/806#issuecomment-328622432
node-cpp-skel has
make formatnow, which we need - refs #808 and #806 (comment)