Make select interaction create its FeatureOverlay

You can now configure it with a `style` option.

examples/modify-features.js

@@ -227,12 +227,15 @@ var overlayStyle = (function() {
   };
 })();
 
+var select = new ol.interaction.Select({
+  style: overlayStyle
+});
 var overlay = new ol.FeatureOverlay({
+  features: select.getFeatures(),
   style: overlayStyle
 });
 
 var modify = new ol.interaction.Modify({ featureOverlay: overlay });
-var select = new ol.interaction.Select({ featureOverlay: overlay });
 
 var map = new ol.Map({
   interactions: ol.interaction.defaults().extend([select, modify]),

examples/select-features.js

@@ -31,11 +31,9 @@ var vector = new ol.layer.Vector({
 });
 
 var select = new ol.interaction.Select({
-  featureOverlay: new ol.FeatureOverlay({
-    style: new ol.style.Style({
-      fill: new ol.style.Fill({
-        color: 'rgba(255,255,255,0.5)'
-      })
+  style: new ol.style.Style({
+    fill: new ol.style.Fill({
+      color: 'rgba(255,255,255,0.5)'
     })
   })
 });