Update marker-clusterer.html

Author: allenhwkim

testapp/marker-clusterer.html

@@ -8,7 +8,7 @@
   <script src="scripts/markerclusterer.js"></script>
   <script>
     MarkerClusterer.prototype.MARKER_CLUSTER_IMAGE_PATH_ 
-      = 'https://raw.githubusercontent.com/googlemaps/js-marker-clusterer/gh-pages/images/m';
+      = 'https://raw.githubusercontent.com/googlemaps/js-marker-clusterer/gh-pages/images/m';  //changed image path
   </script>
   <script src="scripts/markers.js"></script>
   <script>