MAINT: update README

README.md

-[![pipeline status](https://gitlab.com/caosdb/caosdb-advanced-user-tools/badges/master/pipeline.svg)](https://gitlab.com/caosdb/caosdb-advanced-user-tools/commits/master)
+# README
 
-Project migrated to https://gitlab.com/caosdb
-
-# Welcome
+## Welcome
 
 This is the **CaosDB Advanced User Tools** repository and a part of the
-CaosDB project. This project contains tools that are beyond the typical use of
+CaosDB project.
+This project contains tools that are beyond the typical use of
 the CaosDB python client. Especially, this includes the crawler which will
 typically be used by a data curator.
 
-# Setup
+## Setup
 
 Please read the [README_SETUP.md](README_SETUP.md) for instructions on how to
 setup this code.
 
 
-# Further Reading
+## Further Reading
+
+Please refer to the [official documentation](https://docs.indiscale.com/caosdb-advanced-user-tools/) for more information.
+
+## Contributing
+
+Thank you very much to all contributers—[past, present](https://gitlab.com/caosdb/caosdb/-/blob/dev/HUMANS.md), and prospective ones.
 
-Please refer to the [official gitlab repository of the CaosDB
-project](https://gitlab.com/caosdb/caosdb) for more information.
+### Code of Conduct
 
-# License
+By participating, you are expected to uphold our [Code of Conduct](https://gitlab.com/caosdb/caosdb/-/blob/dev/CODE_OF_CONDUCT.md).
 
-Copyright (C) 2018 Research Group Biomedical Physics, Max Planck Institute for
-Dynamics and Self-Organization Göttingen.
+### How to Contribute
+
+* You found a bug, have a question, or want to request a feature? Please 
+[create an issue](https://gitlab.com/caosdb/caosdb-advanced-user-tools/-/issues).
+* You want to contribute code? Please fork the repository and create a merge 
+request in GitLab and choose this repository as target. Make sure to select
+"Allow commits from members who can merge the target branch" under Contribution
+when creating the merge request. This allows our team to work with you on your request.
+- If you have a suggestion for the [documentation](https://docs.indiscale.com/caosdb-advanced-user-tools/), 
+the preferred way is also a merge request as describe above (the documentation resides in `src/doc`).
+However, you can also create an issue for it. 
+- You can also contact us at **info (AT) caosdb.de**.
+
+## License
+
+* Copyright (C) 2018 Research Group Biomedical Physics, Max Planck Institute
+  for Dynamics and Self-Organization Göttingen.
+* Copyright (C) 2020-2021 Indiscale GmbH <info@indiscale.com>
 
 All files in this repository are licensed under a [GNU Affero General Public
 License](LICENCE.md) (version 3 or later).
-