Merge pull request #497 from research-software-directory/153-openssf-…

…badge

Added the OpenSSF best practices badge

README.md

@@ -18,6 +18,7 @@ SPDX-License-Identifier: CC-BY-4.0
 [![DOI](https://zenodo.org/badge/413814951.svg)](https://zenodo.org/badge/latestdoi/413814951)
 [![GitHub license](https://img.shields.io/badge/license-Apache--2.0%20-blue.svg)](https://github.com/research-software-directory/RSD-as-a-service/blob/main/LICENSE)
 [![fair-software.eu](https://img.shields.io/badge/fair--software.eu-%E2%97%8F%20%20%E2%97%8F%20%20%E2%97%8B%20%20%E2%97%8F%20%20%E2%97%8B-orange)](https://fair-software.eu)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/6336/badge)](https://bestpractices.coreinfrastructure.org/projects/6336)
 ![All tests](https://github.com/research-software-directory/RSD-as-a-service/actions/workflows/tests_main.yml/badge.svg)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](code_of_conduct.md)