Display RRID in README

README.md

@@ -19,6 +19,7 @@
 [![https://www.singularity-hub.org/static/img/hosted-singularity--hub-%23e32929.svg](https://www.singularity-hub.org/static/img/hosted-singularity--hub-%23e32929.svg)](https://singularity-hub.org/collections/667)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](https://github.com/datalad/datalad/blob/master/CODE_OF_CONDUCT.md)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.808846.svg)](https://doi.org/10.5281/zenodo.808846)
+[![RRID](https://img.shields.io/badge/RRID?label=SCR__003931)](https://identifiers.org/RRID:SCR_003931)
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
 [![All Contributors](https://img.shields.io/badge/all_contributors-49-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->