Update the links of examples.

Author: EmilZhou

README.md

@@ -29,15 +29,15 @@ With Map Suite VectorMap.js, you will have full access to [OpenLayers](https://o
 | <a href="https://vectormapsamples.thinkgeo.com/#AverageRoundTripCommuteTime"><img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-commute.jpg" width="210" height="210" alt="">
  </a> | <a href="https://vectormapsamples.thinkgeo.com/#ImagerywithLabels">
             <img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-imagerylabel.jpg" width="210" height="210" alt="">
-        </a> | <a href="https://vectormapsamples.thinkgeo.com/#Projection">
-            <img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-projection.jpg" width="210" height="210" alt="">
-        </a> | <a href="https://vectormapsamples.thinkgeo.com/#ElevationalongPath">
-            <img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-elevation.jpg" width="210" height="210" alt="">
+        </a> | <a href="https://vectormapsamples.thinkgeo.com/#FindNearbyPlaces">
+            <img src="https://vectormapsamples.thinkgeo.com/example/image/find_nearby.png" width="210" height="210" alt="">
+        </a> | <a href="https://vectormapsamples.thinkgeo.com/#RenderPOIs">
+            <img src="https://vectormapsamples.thinkgeo.com/example/image/render_pois.png" width="210" height="210" alt="">
         </a> 
 
-| <a href="https://vectormapsamples.thinkgeo.com/#ColorUtilities"><img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-color.jpg" width="210" height="210" alt="">
- </a> | <a href="https://vectormapsamples.thinkgeo.com/#PieChart">
-            <img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-pie.jpg" width="210" height="210" alt="">
+| <a href="https://vectormapsamples.thinkgeo.com/#Scatter"><img src="https://vectormapsamples.thinkgeo.com/example/image/scatter.png" width="210" height="210" alt="">
+ </a> | <a href="https://vectormapsamples.thinkgeo.com/#AQIRadar">
+            <img src="https://vectormapsamples.thinkgeo.com/example/image/aqirader.png" width="210" height="210" alt="">
         </a> | <a href="https://vectormapsamples.thinkgeo.com/#GPX">
             <img src="https://vectormapsamples.thinkgeo.com/example/image/vector-map-gpx.jpg" width="210" height="210" alt="">
         </a> | <a href="https://vectormapsamples.thinkgeo.com/#StylingLines">