README.md in geocoder-1.7.2 vs README.md in geocoder-1.7.3

@@ -348,13 +348,19 @@
 * `store#del(url)` - deletes a value
 * `store#keys` - (Optional) Returns array of keys. Used if you wish to expire the entire cache (see below).
 
 Even a plain Ruby hash will work, though it's not a great choice (cleared out when app is restarted, not shared between app instances, etc).
 
+When using Rails use the Generic cache store as an adapter around `Rails.cache`:
+
+```ruby
+Geocoder.configure(cache: Geocoder::CacheStore::Generic.new(Rails.cache, {}))
+```
+
 You can also set a custom prefix to be used for cache keys:
 
 ```ruby
-Geocoder.configure(cache_prefix: "...")
+Geocoder.configure(cache_options: { prefix: "..." })
 ```
 
 By default the prefix is `geocoder:`
 
 If you need to expire cached content: