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README.md

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 [![support](https://img.shields.io/badge/support-JetBrains-brightgreen)](https://www.jetbrains.com/?from=gmx_MMPBSA)
 [![support](https://img.shields.io/badge/support-Sourcery-orange)](https://sourcery.ai/invite/gndRrjlo)
 [![python](https://img.shields.io/badge/python-v3.x-blue)]()
+[![help forum](https://img.shields.io/badge/help_forum-Google_group-blue)](https://groups.google.com/g/gmx_mmpbsa)
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 [![Downloads](https://pepy.tech/badge/gmx-mmpbsa)](https://pepy.tech/project/gmx-mmpbsa)
 [![DOI](https://img.shields.io/badge/DOI-10.1021%2Facs.jctc.1c00645-blue)](https://pubs.acs.org/doi/10.1021/acs.jctc.1c00645)
 
 # Welcome to gmx_MMPBSA!
 gmx_MMPBSA is a new tool based on AMBER's MMPBSA.py aiming to perform end-state free energy calculations with GROMACS 
-files. It works with all GROMACS versions along with AmberTools20, 21 or 22.
+files. It works with all GROMACS versions along with AmberTools >= 20.
 
 **Please see the documentation [here](https://valdes-tresanco-ms.github.io/gmx_MMPBSA/dev/getting-started)**