zillow_neighborhoods (Updated Apr 2018 from Zillow)

Convert shapefile to geojson

Use ogr2ogr to convert shapefile to geojson

for f in *.shp; do ogr2ogr -f "geojson" ${f:r}.geojson $f done

Merge all geojson into one big file

npm install --save @mapbox/geojson-merge
geojson-merge *.geojson > combined.geojson

Credit: Zillow

https://www.zillow.com/howto/api/neighborhood-boundaries.htm