Geocode coordinates in `lat/lon` format for Mapbox web URIs

coords-for.sh

function coords-for {
     if [ $# -lt 1 ]; then
       echo "Usage: coords-for LOCATION"
    fi
    local location=$1
    mapbox geocoding "$location" --features --limit 1 \
       | jq -c ".center|[.[1],.[0]]" \
       | sed 's/\[//g' | sed 's/\]//g' | sed 's/,/\//g'
}