Add badges (further update required)

CONTRIBUTING.rst

@@ -1,27 +1,14 @@
-.. todo:: THIS IS SUPPOSED TO BE AN EXAMPLE. MODIFY IT ACCORDING TO YOUR NEEDS!
-
-   The document assumes you are using a source repository service that promotes a
-   contribution model similar to `GitHub's fork and pull request workflow`_.
-   While this is true for the majority of services (like GitHub, GitLab,
-   BitBucket), it might not be the case for private repositories (e.g., when
-   using Gerrit).
-
-   Also notice that the code examples might refer to GitHub URLs or the text
-   might use GitHub specific terminology (e.g., *Pull Request* instead of *Merge
-   Request*).
-
-   Please make sure to check the document having these assumptions in mind
-   and update things accordingly.
-
-.. todo:: Provide the correct links/replacements at the bottom of the document.
-
-.. todo:: You might want to have a look on `PyScaffold's contributor's guide`_,
-
-   especially if your project is open source. The text should be very similar to
-   this template, but there are a few extra contents that you might decide to
-   also include, like mentioning labels of your issue tracker or automated
-   releases.
-
+.. |pre-commit-badge| image:: https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit
+   :target: https://github.com/pre-commit/pre-commit
+   :alt: pre-commit
+.. |black-badge| image:: https://img.shields.io/badge/code%20style-black-000000.svg
+   :target: https://github.com/psf/black
+   :alt: black
+.. |isort-badge| image:: https://img.shields.io/badge/style-isort-yellow.svg
+   :target: https://pycqa.github.io/isort/
+   :alt: isort
+
+|pre-commit-badge| |black-badge| |isort-badge|
 
 ============
 Contributing