README.md in deepl-rb-2.2.0 vs README.md in deepl-rb-2.2.1

@@ -85,13 +85,15 @@
 | --------------- | ---------------
 | `EN`            | English
 | `DE`            | German
 | `FR`            | French
 | `ES`            | Spanish
+| `PT`            | Portuguese
 | `IT`            | Italian
 | `NL`            | Dutch
 | `PL`            | Polish
+| `RU`            | Russian
 
 You can also use custom query parameters, like `tag_handling`, `split_sentences`, `non_splitting_tags` or `ignore_tags`:
 
 ```rb
 translation = DeepL.translate '<p>A sample</p>', 'EN', 'ES',
@@ -126,15 +128,16 @@
 
 ### Handle exceptions
 
 You can capture and process exceptions that may be raised during API calls. These are all the possible exceptions:
 
-| Exception class | Descripcion |
+| Exception class | Description |
 | --------------- | ----------- |
-| `DeepL::Exceptions::AuthorizationFailed` | The authorization process has failed. Check your auth_key value. |
+| `DeepL::Exceptions::AuthorizationFailed` | The authorization process has failed. Check your `auth_key` value. |
 | `DeepL::Exceptions::BadRequest` | Something is wrong in your request. Check `exception.message` for more information. |
 | `DeepL::Exceptions::LimitExceeded` | You've reached the API's call limit. |
+| `DeepL::Exceptions::QuotaExceeded` | You've reached the API's character limit. |
 | `DeepL::Exceptions::RequestError` | An unkown request error. Check `exception.response` and `exception.request` for more information. |
 
 An exampling of handling a generic exception:
 
 ```rb
@@ -144,11 +147,33 @@
   puts 'Oops!'
   puts "Code: #{e.response.code}"
   puts "Response body: #{e.response.body}"
   puts "Request body: #{e.request.body}"
 end
+```
 
+## Integrations
+
+### Ruby on Rails
+
+You may use this gem as a standalone service by creating an initializer on your
+`config/initializers` folder with your DeepL configuration. For example:
+
+```rb
+# config/initializers/deepl.rb
+DeepL.configure do |config|
+  # Your configuration goes here
+end
 ```
+
+Since the DeepL service is defined globally, you can use service anywhere in your code
+(controllers, models, views, jobs, plain ruby objects… you name it).
+
+### i18n-tasks
+
+You may also take a look at [`i18n-tasks`](https://github.com/glebm/i18n-tasks), which is a gem
+that helps you find and manage missing and unused translations. `deepl-rb` is used as one the
+backend services to translate content.
 
 ## Development
 
 Clone the repository, and install its dependencies: