Merge pull request #11 from lbl-camera/new-badges

Add DOI and slack badge; abbreviate license badge

README.md

@@ -4,7 +4,9 @@
 [![Documentation Status](https://readthedocs.org/projects/gpcam/badge/?version=latest)](https://gpcam.readthedocs.io/en/latest/?badge=latest)
 [![fvGP CI](https://github.com/lbl-camera/fvGP/actions/workflows/fvGP-CI.yml/badge.svg)](https://github.com/lbl-camera/fvGP/actions/workflows/fvGP-CI.yml)
 [![Codecov](https://img.shields.io/codecov/c/github/lbl-camera/fvGP)](https://app.codecov.io/gh/lbl-camera/fvGP)
-[![PyPI - License](https://img.shields.io/pypi/l/fvGP)](https://pypi.org/project/fvgp/)
+[![PyPI - License](https://img.shields.io/badge/license-GPL%20v3-lightgrey)](https://pypi.org/project/fvgp/)
+[<img src="https://img.shields.io/badge/slack-@gpCAM-purple.svg?logo=slack">](https://gpCAM.slack.com/)
+[![DOI](https://zenodo.org/badge/434769505.svg)](https://zenodo.org/badge/latestdoi/434769505)
 
 
 Python package for highly flexible function-valued Gaussian processes (fvGP)