Store the KML Placemark identifier

test/spec/ol/parser/kml.test.js

@@ -86,6 +86,7 @@ describe('ol.parser.kml', function() {
             'itself \n       at the height of the underlying terrain.';
         expect(obj.features[0].get('description')).to.eql(description);
         expect(obj.features[0].get('foo')).to.eql('bar');
+        expect(obj.features[0].getFeatureId()).to.eql('foobarbaz');
       });
     });
     it('Extended data read correctly [2]', function() {

test/spec/ol/parser/kml/extended_data.kml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/kml/2.2 http://schemas.opengis.net/kml/2.2.0/ogckml22.xsd">
-  <Placemark>
+  <Placemark id="foobarbaz">
     <name>Extended data placemark</name>
     <description>Attached to the ground. Intelligently places itself 
        at the height of the underlying terrain.</description>