README.md in rakuten_web_service-1.10.0 vs README.md in rakuten_web_service-1.11.0

@@ -55,15 +55,15 @@
 You need to get Application ID for your application to access to Rakuten Web Service APIs.
 If you have not got it, register your application [here](https://webservice.rakuten.co.jp/app/create).
 
 ### Configuration
 
-At first, you have to specify your application's key. And you can tell the client your afiiliate id with `RakutenWebService.configuration`.
+At first, you have to specify your application's key. And you can tell the client your afiiliate id with `RakutenWebService.configure`.
 
 #### In Your Code
 
 ```ruby
-  RakutenWebService.configuration do |c|
+  RakutenWebService.configure do |c|
     # (Required) Appliction ID for your application.
     c.application_id = 'YOUR_APPLICATION_ID'
 
     # (Optional) Affiliate ID for your Rakuten account.
     c.affiliate_id = 'YOUR_AFFILIATE_ID' # default: nil