Add badges

README.rst

@@ -2,14 +2,18 @@
 PegasusIO for reading / writing single-cell genomics data
 =========================================================
 
-|PyPI| |PyPIDownload| |Conda| |Docs| |Build|
+|PyPI| |PyPIDownload| |Conda| |Python| |License| |Docs| |Build|
 
 .. |PyPI| image:: https://img.shields.io/pypi/v/pegasusio.svg
    :target: https://pypi.org/project/pegasusio
 .. |PyPIDownload| image:: https://pepy.tech/badge/pegasusio
    :target: https://pepy.tech/project/pegasusio
 .. |Conda| image:: https://img.shields.io/conda/v/bioconda/pegasusio
    :target: https://anaconda.org/bioconda/pegasusio
+.. |Python| image:: https://img.shields.io/pypi/pyversions/pegasusio
+   :target: https://pypi.org/project/pegasusio
+.. |License| image:: https://img.shields.io/github/license/klarman-cell-observatory/pegasusio
+   :target: https://github.com/klarman-cell-observatory/pegasusio/blob/master/LICENSE
 .. |Docs| image:: https://readthedocs.org/projects/pegasusio/badge/?version=latest
    :target: https://pegasusio.readthedocs.io
 .. |Build| image:: https://travis-ci.org/klarman-cell-observatory/pegasusio.svg?branch=master