readme updated

README.md

@@ -3,7 +3,7 @@ wagtailgmaps
 
 ![Wagtailgmaps screenshot](http://i.imgur.com/9m9Gfcf.png)
 
-Simple Google Maps address formatter for Wagtail fields.
+Simple Google Maps address formatter and LatLng provider for Wagtail fields.
 
 # Quickstart
 
@@ -43,9 +43,21 @@ address_panels = MultiFieldPanel([
 
 Notice the `FieldPanel` is embedded in a `MultiFieldPanel`, even if it only contains a single element. If you define your `FieldPanel` outside it won't work. The app supports more than one map (field) at the same time.
 
+If instead of outputting a formatted address, you want to output a LatLng, you should add `gmap--latlng` modifier class to the panel:
+
+```
+latlng = models.CharField(max_length=255)
+
+panels = [
+    MultiFieldPanel([
+        FieldPanel('latlng', classname="gmap gmap--latlng"),
+    ], heading="Map location"),
+]
+```
+
 When editing the model from the admin interface the affected field shows up with a map, like the screenshot above.
 
-The field gets updated according to the [Google Geocoding Service](https://developers.google.com/maps/documentation/geocoding/) each time:
+If using the address option, the field gets updated according to the [Google Geocoding Service](https://developers.google.com/maps/documentation/geocoding/) each time:
 
 * The map market gets dragged and dropped into a location (`dragend` JS event).
 * Click happens somewhere in the map (`click` JS event).
@@ -58,3 +70,9 @@ Once your address field is properly formatted and stored in the database you can
 ```
 <a href="http://maps.google.com/?q={{ address }}">Open map</a>
 ```
+
+Or if you opted for the LatLng pair option:
+
+```
+<a href="http://maps.google.com/?q={{ latlng }}">Open map</a>
+```