Update README.md

Author: vgvoleg

README.md

@@ -1,5 +1,6 @@
 # YDB Dialect for SQLAlchemy
 ---
+[![PyPI version](https://badge.fury.io/py/ydb-sqlalchemy.svg)](https://badge.fury.io/py/ydb-sqlalchemy)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/ydb-platform/ydb-sqlalchemy/blob/main/LICENSE)
 [![Functional tests](https://github.com/ydb-platform/ydb-sqlalchemy/actions/workflows/tests.yml/badge.svg)](https://github.com/ydb-platform/ydb-sqlalchemy/actions/workflows/tests.yml)
 [![Style checks](https://github.com/ydb-platform/ydb-sqlalchemy/actions/workflows/style.yml/badge.svg)](https://github.com/ydb-platform/ydb-sqlalchemy/actions/workflows/style.yml)
@@ -10,6 +11,15 @@ This repository contains YQL dialect for SqlAlchemy 2.0.
 
 
 ## Installation
+
+### Via PyPI
+To install ydb-sqlalchemy from PyPI:
+
+```bash
+$ pip install ydb-sqlalchemy
+```
+
+### Installation from source code
 To work with current ydb-sqlalchemy version clone this repo and run from source root:
 
 ```bash