EsriJSONLayer incorrectly calls "x" and "y" properties of "points" array in MultiPoint Geometry return

[jonfrench]

Hello. Thank you for the great Plugin.

In src/layer/EsriJSONLayer.js:24 of the v1.4 release, the plugin invokes the "x" and "y" properties on the values of the geometry.points array. Although single point Geometries returned from the ArcGIS web service do have these two properties, MultiPoints do not and cause "undefined" to be passed to L.LatLng.

See the 9.3 ESRI documentation showing the structure of the "points" array. The structure is the same for 10.x too:

http://resources.esri.com/help/9.3/arcgisserver/apis/rest/geometry.html (scroll down to "Multipoint")

The fix is:

for (var i = 0, len = geometry.points.length; i < len; i++) {
     var point = geometry.points[i];
     vectors.push(new L.Marker(new L.LatLng(point[1], point[0]), opts));
}