Add a MIT license badge

Author: mwouts

README.md

@@ -2,6 +2,7 @@
 
 [![CI](https://github.com/mwouts/itables/actions/workflows/continuous-integration.yml/badge.svg?branch=main)](https://github.com/mwouts/itables/actions)
 [![codecov.io](https://codecov.io/github/mwouts/itables/coverage.svg?branch=main)](https://codecov.io/github/mwouts/itables?branch=main)
+[![MIT License](https://img.shields.io/github/license/mwouts/itables)](LICENSE)
 [![Pypi](https://img.shields.io/pypi/v/itables.svg)](https://pypi.python.org/pypi/itables)
 [![Conda Version](https://img.shields.io/conda/vn/conda-forge/itables.svg)](https://anaconda.org/conda-forge/itables)
 [![pyversions](https://img.shields.io/pypi/pyversions/itables.svg)](https://pypi.python.org/pypi/itables)

docs/quick_start.md

@@ -16,6 +16,7 @@ kernelspec:
 
 [![CI](https://github.com/mwouts/itables/actions/workflows/continuous-integration.yml/badge.svg?branch=main)](https://github.com/mwouts/itables/actions)
 [![codecov.io](https://codecov.io/github/mwouts/itables/coverage.svg?branch=main)](https://codecov.io/github/mwouts/itables?branch=main)
+[![MIT License](https://img.shields.io/github/license/mwouts/itables)](https://github.com/mwouts/itables/blob/main/LICENSE)
 [![Pypi](https://img.shields.io/pypi/v/itables.svg)](https://pypi.python.org/pypi/itables)
 [![Conda Version](https://img.shields.io/conda/vn/conda-forge/itables.svg)](https://anaconda.org/conda-forge/itables)
 [![pyversions](https://img.shields.io/pypi/pyversions/itables.svg)](https://pypi.python.org/pypi/itables)