Sketch of adding a raster source to tm2.
Switch to node-mapnik master to avoid crashes.
Merge branch 'master' into source-raster
tif files integrated
raster/vector layer type restriction
merge master
Merge branch 'master' into source-raster
Merge branch 'master' into source-raster
Merge branch 'master' into source-raster
raster sources always have one vector_layer called _image
tests for raster vector_layer manipulation
merge master
Merge branch 'source-raster' of github.com:mapbox/tm2 into source-raster
VRT added
Merge branch 'master' into source-raster
upload source to mapbox.com after export ref #472
Merge branch 'master' into direct-upload
fix layeritem template if obj.Datasource is undefined
use progress-stream for reporting #472
remove get.stats