Updated README

README.md

@@ -1,7 +1,7 @@
 ![Simple Map](resources/banner.jpg)
 
 # Simple Map
-A beautifully simple Google Map field type for **Craft 3**. Full localization support, compatible with Matrix, supports 
+A beautifully simple Google Map field type for **Craft 3**. Full localization support, compatible with Matrix & [CraftQL](https://github.com/markhuot/craftql), supports 
 searching by location and sorting by distance.
 
 [Click here for the **Craft 2.5** version.](https://github.com/ethercreative/simplemap/tree/v2)
@@ -90,4 +90,20 @@ var map = new mapboxgl.Map({
   ]
 });
 </script>
+```
+
+### Converting an address to Lat/Lng
+If you need to convert a string address to a Lat/Lng you can do so using the 
+`craft.simpleMap.getLatLngFromAddress($addressString[, $country])` variable.
+An example of this would be wanting to convert a customers delivery address to a 
+Lat/Lng, to display it on a map.
+
+- `$address` - The string address you want to convert.
+- `$country` - *Optional.* Restrict the conversion to a specific country (useful for non-specific searches, i.e. town name). Must be valid [2-letter ISO code](https://en.wikipedia.org/wiki/ISO_3166-1#Current_codes) (recommended), or full country name. 
+
+```twig
+{% set location = craft.simpleMap.getLatLngFromAddress("Ether Creative, Maidstone", "GB") %}
+
+{{ location.lat }}
+{{ location.lng }}
 ```