docs/redis/README.md in flipper-redis-0.21.0.rc1 vs docs/redis/README.md in flipper-redis-0.21.0.rc2

@@ -26,13 +26,10 @@
 
 **If you need to customize the adapter**, you can add this to an initializer:
 
 ```ruby
 Flipper.configure do |config|
-  config.default do
-    client = Redis.new(url: ENV["FLIPPER_REDIS_URL"] || ENV["REDIS_URL"])
-    Flipper.new(Flipper::Adapters::Redis.new(client))
-  end
+  config.adapter { Flipper::Adapters::Redis.new(Redis.new) }
 end
 ```
 
 ## Internals