Fix .photoUrl property to match docs

To close #7
Thanks @edwin-oetelaar for spotting the mistake

README.md

@@ -7,6 +7,7 @@ map web page for plotting "things" on.
 ![Map Image](https://dceejay.github.io/pages/images/redmap.png)
 
 ### Changes
+ - v1.0.18 - Correct .photourl property to match .photoUrl as per docs
  - v1.0.17 - Removed Mapquest maps. Bug fixes - reduced leakage of listeners being added.
  - v1.0.12 - Added ability to set initial start position, zoom level and base map layer.
  - v1.0.x - now uses socket.io to connect to backend - means this node now has an input connection

package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-contrib-web-worldmap",
-    "version"       : "1.0.17",
+    "version"       : "1.0.18",
     "description"   : "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies"  : {
         "express": "4.*",

worldmap/index.html

@@ -843,6 +843,9 @@ function setMarker(data) {
         if (data.hasOwnProperty("photourl")) {
             words += "<img src=\"" + data.photourl + "\" style=\"width:100%; margin-top:10px;\">";
         }
+        if (data.hasOwnProperty("photoUrl")) {
+            words += "<img src=\"" + data.photoUrl + "\" style=\"width:100%; margin-top:10px;\">";
+        }
         marker.bindPopup(words);
         marker._popup.dname = data.name;
         marker.ts = parseInt(Date.now()/1000);  // save time we got this marker