Merge pull request #1728 from Ragazzo/i18n_docs_view

I18n docs view

docs/guide/i18n.md

@@ -259,6 +259,16 @@ Will produce "Snoopy is dog and it loves Yii!".
 In the expression `female` and `male` are possible values. `other` handler values that do not match. Strings inside
 brackets are sub-expressions so could be just a string or a string with more placeholders.
 
+Views
+-----
+
+You can use i18n in your views to provide support for different languages. For example, if you have view `views/site/index.php` and
+you want to create special case for russian language, you create `ru-RU` folder under the view path of current controller/widget and
+put there file for russian language as follows `views/site/ru-RU/index.php`.
+
+> **Note**: You should note that in **Yii2** language id style has changed, now it use dash **ru-RU, en-US, pl-PL** instead of underscore, because of
+> php **intl** library.
+
 Formatters
 ----------