GUI -- Update to memento format.

Change-Id: I99c579668b17014d4cdceb9ce5898c4ed49c5be4
diff --git a/web/gui/src/main/webapp/json/ev/_capture/rx/addDevice_ex1.json b/web/gui/src/main/webapp/json/ev/_capture/rx/addDevice_ex1.json
index f00cf2c..822fc25 100644
--- a/web/gui/src/main/webapp/json/ev/_capture/rx/addDevice_ex1.json
+++ b/web/gui/src/main/webapp/json/ev/_capture/rx/addDevice_ex1.json
@@ -10,6 +10,13 @@
       "",
       null
     ],
-    "props": {}
+    "props": {
+      "location": {
+        "type": "latlng",
+        "lat": 123.5,
+        "lng": 67.8
+      },
+      "anotherProp": "foobar"
+    }
   }
 }