Add PyPI badges

Author: ncaptier

README.md

@@ -7,6 +7,8 @@
 [![Documentation Status](https://readthedocs.org/projects/stabilized-ica/badge/?version=latest)](https://stabilized-ica.readthedocs.io/en/latest/?badge=latest) 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![PyPI version](https://badge.fury.io/py/stabilized-ica.svg)](https://badge.fury.io/py/stabilized-ica)
+[![Downloads](https://pepy.tech/badge/stabilized-ica)](https://pepy.tech/project/stabilized-ica)
 
 This repository proposes a python implementation for stabilized ICA decomposition algorithm. Most of the technical
 details can be found in the references [1], [2],[3], [4] and [5].