README.md in deepl-rb-2.1.0 vs README.md in deepl-rb-2.2.0

@@ -1,10 +1,10 @@
 [![Gem Version](https://badge.fury.io/rb/deepl-rb.svg)](https://badge.fury.io/rb/deepl-rb) [![CircleCI](https://circleci.com/gh/wikiti/deepl-rb.svg?style=shield)](https://circleci.com/gh/wikiti/deepl-rb) [![CodeCov](https://codecov.io/gh/wikiti/deepl-rb/branch/master/graph/badge.svg?token=SHLgQNlZ4o)](https://codecov.io/gh/wikiti/deepl-rb)
 
 # DeepL for ruby
 
-A simple ruby wrapper for the [DeepL translation API (v1)](https://www.deepl.com/api.html).
+A simple ruby wrapper for the [DeepL translation API (v2)](https://www.deepl.com/api.html).
 
 ## Installation
 
 Install this gem with
 
@@ -33,15 +33,16 @@
 DeepL.configure do |config|
   config.auth_key = 'your-api-token'
 end
 ```
 
-You can also configure the api host:
+You can also configure the API host and the API version:
 
 ```rb
 DeepL.configure do |config|
   config.auth_key = 'your-api-token'
   config.host = 'https://test-api.deepl.com' # Default value is 'https://api.deepl.com'
+  config.version = 'v1' # Default value is 'v2'
 end
 ```
 
 ### Translate