switched to lodash.extend over extend module

middleware/geocodeJSON.js

@@ -74,7 +74,7 @@ function convertToGeocodeJSON(req, res, next, opts) {
   res.body.geocoding.timestamp = new Date().getTime();
 
   // convert docs to geojson and merge with geocoding block
-  extend(res.body, geojsonify(req.clean, res.data || []));
+  _.extend(res.body, geojsonify(req.clean, res.data || []));
 
   next();
 }