doc: update README.md (#550)

README.md

@@ -1,18 +1,17 @@
 <img src="./RAVEN2.png" width="200px">
 
-[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3689518.svg)](https://doi.org/10.5281/zenodo.3689518)
-[![GitHub release](https://img.shields.io/github/release/SysBioChalmers/RAVEN/all.svg)](https://GitHub.com/SysBioChalmers/RAVEN/releases/)
-[![Tests 
-passing](https://github.com/SysBioChalmers/RAVEN/actions/workflows/tests.yml/badge.svg?branch=main)](https://github.com/SysBioChalmers/RAVEN/actions)
-[![Join the chat at https://gitter.im/SysBioChalmers/RAVEN](https://badges.gitter.im/SysBioChalmers/RAVEN.svg)](https://gitter.im/SysBioChalmers/RAVEN?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[![View RAVEN Toolbox on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://se.mathworks.com/matlabcentral/fileexchange/112330-raven-toolbox)
+[![Current release](https://img.shields.io/github/release/SysBioChalmers/RAVEN/all.svg)](https://GitHub.com/SysBioChalmers/RAVEN/releases/)
+[![GitHub Discussions](https://img.shields.io/github/discussions-search?query=repo%3Asysbiochalmers%2raven&label=GitHub%20Discussions)](https://github.com/SysBioChalmers/RAVEN/discussions)
+[![Zenodo](https://zenodo.org/badge/DOI/10.5281/zenodo.3689518.svg)](https://doi.org/10.5281/zenodo.3689518)
+[![MATLAB File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://se.mathworks.com/matlabcentral/fileexchange/112330-raven-toolbox)
 
-The RAVEN (Reconstruction, Analysis and Visualization of Metabolic Networks) Toolbox 2 is a software suite for Matlab that allows for semi-automated reconstruction of genome-scale models (GEMs). It makes use of published models and/or KEGG, MetaCyc databases, coupled with extensive gap-filling and quality control features. The software suite also contains methods for visualizing simulation results and omics data, as well as a range of methods for performing simulations and analyzing the results. The software is a useful tool for system-wide data analysis in a metabolic context and for streamlined reconstruction of metabolic networks based on protein homology.
+## About RAVEN 2
+
+The **RAVEN** (Reconstruction, Analysis and Visualization of Metabolic Networks) Toolbox 2 is a software suite for MATLAB that allows for semi-automated reconstruction of genome-scale models (GEMs). It makes use of published models and/or KEGG, MetaCyc databases, coupled with extensive gap-filling and quality control features. The software suite also contains methods for visualizing simulation results and omics data, as well as a range of methods for performing simulations and analyzing the results. The software is a useful tool for system-wide data analysis in a metabolic context and for streamlined reconstruction of metabolic networks based on protein homology.
 
 
 ## Documentation
-The information about downloading, installing and developing RAVEN is included in the [Wiki](https://github.com/SysBioChalmers/RAVEN/wiki). The source code documentation is also available 
-[online](http://sysbiochalmers.github.io/RAVEN/doc/).
+The information about downloading, installing and developing RAVEN is included in the [Wiki](https://github.com/SysBioChalmers/RAVEN/wiki). The source code documentation is also available [online](http://sysbiochalmers.github.io/RAVEN/doc/).
 
 
 ## Cite Us
@@ -27,7 +26,8 @@ If you use ftINIT in your scientific work, please cite:
 For crediting supporting work, please cite doi:[10.1002/msb.145122](http://msb.embopress.org/content/10/3/721) (`tInit`); doi:[10.1371/journal.pcbi.1000859](http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1000859) (`randomsampling`). For crediting RAVEN 1, cite doi:[10.1371/journal.pcbi.1002980](http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1002980). For more details, see [wiki#cite-us](https://github.com/SysBioChalmers/RAVEN/wiki#cite-us).
 
 ## Contact Us
-For support, technical issues, bug reports etc., please [![Join the chat at https://gitter.im/SysBioChalmers/RAVEN](https://badges.gitter.im/SysBioChalmers/RAVEN.svg)](https://gitter.im/SysBioChalmers/RAVEN?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge). For other issues, please contact [Eduard Kerkhoven](https://www.chalmers.se/en/persons/eduardk/).
+Use [GitHub Discussions](https://github.com/SysBioChalmers/RAVEN/discussions) for support, to ask questions or leave comments.
+
+## Contributing
 
-## More from SysBio Chalmers
-For more systems biology related software and recently published genome-scale models from the Systems and Synthetic Biology group at Chalmers University of Technology, please visit the [GitHub page](https://github.com/SysBioChalmers). For more information and publications by the Systems and Synthetic Biology please visit [SysBio](https://www.sysbio.se/).
+Contributions are always welcome! Please read the [contributing guidelines](https://github.com/SysBioChalmers/GECKO/blob/main/.github/CONTRIBUTING.md) to get started.