Update README.md

Author: khoroshevskyi

README.md

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-# bedboss
+<h1 align="center">bedboss</h1>
 
+<div align="center">
+  
 [![PEP compatible](https://pepkit.github.io/img/PEP-compatible-green.svg)](https://pep.databio.org/)
 ![Run pytests](https://github.com/bedbase/bedboss/workflows/Run%20instalation%20test/badge.svg)
 [![pypi-badge](https://img.shields.io/pypi/v/bedboss?color=%2334D058)](https://pypi.org/project/bedboss)
 [![pypi-version](https://img.shields.io/pypi/pyversions/bedboss.svg?color=%2334D058)](https://pypi.org/project/bedboss)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![Github badge](https://img.shields.io/badge/source-github-354a75?logo=github)](https://github.com/databio/bedboss)
 
+</div>
+
 ---
 
 **Documentation**: <a href="https://docs.bedbase.org/bedboss" target="_blank">https://docs.bedbase.org/bedboss</a>