Add badges for github source and tests

docs/source/index.rst

@@ -1,19 +1,27 @@
 Motile Napari Plugin
 ====================
 
+|source code| |tests|
+
+.. |source code| image:: https://img.shields.io/badge/GitHub-100000?logo=github&logoColor=white
+   :target: https://github.com/funkelab/motile_napari_plugin
+
+.. |tests| image:: https://github.com/funkelab/motile-napari-plugin/workflows/tests/badge.svg
+   :target: https://github.com/funkelab/motile-napari-plugin/actions
+
 .. video:: images/results_demo_720p.mp4
    :width: 720
 
 A plugin for tracking with `motile`_ in napari.
 Motile is a library that makes it easy to solve tracking problems using optimization
 by framing the task as an Integer Linear Program (ILP).
-See the `motile documentation`_
-for more details on the concepts and method.
+See the `motile documentation`_ for more details on the concepts and method.
 
 .. toctree::
    :maxdepth: 3
 
    getting_started
 
 .. _motile: https://github.com/funkelab/motile
+.. _github link: https://github.com/funkelab/motile_napari_plugin
 .. _motile documentation: https://funkelab.github.io/motile