Documented the new $config['qso_auto_qth'] function that allows locator to be geo coded from location

Cloudlog.php-Configuration-File.md

@@ -7,4 +7,5 @@ The configuration file `application/config/cloudlog.php` is used for setting any
 ## Configuration Items
 * `$config['show_time']` - This controls whether users who are not logged in can see QSO times, the default is set to false.
 * `$config['measurement_base']` - This allows you to set unit of measurement used for showing bearings, the default is `M` which is miles, however, you can set `K` for kilometres and `N` for nautic miles.
-* `$config['qso_date_format']` - changing this allows you to change the date format displayed this uses the php date() format, see notes in the file for details.
+* `$config['qso_date_format']` - changing this allows you to change the date format displayed this uses the php date() format, see notes in the file for details.
+* $config['qso_auto_qth'] - Setting this to TRUE allows the QTH locator to be pre-filled based on the person's location when creating new QSO. OSM's Nominatim API is being used for that purpose