Update README.md (#83)

Co-authored-by: Sergei Predvoditelev <sergey.predvoditelev@gmail.com>

README.md

@@ -33,7 +33,7 @@ Features are:
 
 ## Installation
 
-The package could be installed with composer:
+The package could be installed with [Composer](https://getcomposer.org):
 
 ```shell
 composer require yiisoft/hydrator
@@ -97,7 +97,7 @@ argument passing `V8` as the `name` argument to its constructor.
 
 ## Documentation
 
-- Guide: [English](docs/guide/en/README.md), [Português - Brasil](docs/guide/pt-BR/README.md)
+- Guide: [English](docs/guide/en/README.md), [Português - Brasil](docs/guide/pt-BR/README.md), [Русский](docs/guide/ru/README.md)
 - [Internals](docs/internals.md)
 
 If you need help or have a question, the [Yii Forum](https://forum.yiiframework.com/c/yii-3-0/63) is a good place for that.