GeoJSON implementation fixes#32

Open

mvl22 wants to merge 3 commits intoafast:developfrom

Commits on Apr 10, 2018

In GeoJSON, fix feature_collection validation
mvl22
committed
In GeoJSON, enable LineString and Polygon to pass through validate_feature, rather than always fail
mvl22
committed
Fix coordinates in GeoJSON example - GeoJSON order is lng,lat
mvl22
committed