Update polyfill README

Author: nyamsprod

README.md

@@ -1,5 +1,10 @@
 # URI parsing polyfill for PHP8.1+
 
+
+[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
+[![Latest Version](https://img.shields.io/github/release/thephpleague/uri-pollyfill.svg?style=flat-square)](https://github.com/thephpleague/uri-interfaces/releases)
+[![Total Downloads](https://img.shields.io/packagist/dt/league/uri-polyfill.svg?style=flat-square)](https://packagist.org/packages/league/uri-interfaces)
+
 ````php
 $uri = new Uri\Rfc3986\Uri("HTTPS://ex%61mpLE.com:443/foo/../bar/./baz?#fragment");
 $uri->toRawString(); // returns "HTTPS://ex%61mpLE.com:443/foo/../bar/./baz?#fragment"