Update src/main/java/com/zerohighdef/geoffrey/Objects/GeoffreyAPICallback.java

Changing from getFirstItem() to getInfoString() so that each shop can return more than one result in selling_list.

src/main/java/com/zerohighdef/geoffrey/Objects/GeoffreyAPICallback.java

@@ -78,7 +78,7 @@ public abstract class GeoffreyAPICallback implements ICallback {
 
             stringBuilder.append(geoffreyShop.getFormattedLocationString());
             stringBuilder.append("\n");
-            stringBuilder.append(geoffreyShop.getFirstItem().getFormattedItemListing());
+            stringBuilder.append(geoffreyShop.getInfoString().getFormattedItemListing());
             stringBuilder.append("\n");
         }