Add PyPI and License badge

Author: filmor

README.md

@@ -1,5 +1,7 @@
 # clr-loader
 
 ![CI](https://github.com/pythonnet/clr-loader/workflows/Python%20Tests/badge.svg)
+![Pypi](https://img.shields.io/pypi/v/clr-loader.svg)
+![License](https://img.shields.io/badge/license-MIT-blue.svg?maxAge=3600)
 
 Implements a generic interface for loading one of the CLR (.NET) runtime implementations and calling simple functions on them.