updating general files

CONTRIBUTING.md

@@ -1,3 +1,9 @@
-# How to contribute <a name="top"/>
+# How to contribute
 
-Please check our [contribution document](https://github.com/HumanBrainProject/openMINDS/blob/main/CONTRIBUTING.md).
+The openMINDS metadata framework is an open-source project and community contributions are highly appreciated.  
+If you want to contribute please follow our :arrow_right: [**contribution guidelines**][contribution-url].
+
+
+<!-- MARKDOWN LINKS & IMAGES -->
+<!-- https://www.markdownguide.org/basic-syntax/#reference-style-links -->
+[contribution-url]: https://openminds-documentation.readthedocs.io/en/latest/shared/how_to_contribute.html

LICENSE.txt

@@ -1,4 +1,4 @@
-Copyright 2020-2022 Forschungszentrum Jülich GmbH, Universitetet i Oslo, CNRS, EBRAINS AISBL
+Copyright 2020-2023 open Metadata Initiative
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

README.md

@@ -1,17 +1,32 @@
-<a href="https://github.com/HumanBrainProject/openMINDS_core/blob/v3/img/openMINDS_core_logo.png">
-    <img src="https://github.com/HumanBrainProject/openMINDS_core/blob/v3/img/light_openMINDS-core-logo.png" alt="openMINDS core logo" title="openMINDS core" align="right" height="70" />
+<a href="/img/openMINDS_core_logo_light.png">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="/img/openMINDS_core_logo_dark.png">
+    <source media="(prefers-color-scheme: light)" srcset="/img/openMINDS_core_logo_light.png">
+    <img alt="openMINDS_core metadata model" src="/img/openMINDS_core_logo_light.png" title="Logo created by U. Schlegel, L. Zehl, C. Hagen Blixhavn" align="right" height="70">
+  </picture>
 </a>
 
 # openMINDS_core
 
-The **openMINDS_core** repository is part of the **open** **M**etadata **I**nitiative for **N**euroscience **D**ata Structures (**openMINDS**). It provides the core metadata schemas for describing the general origin, location and content of neuroscience research products.
+![GitHub][license-url]
+![GitHub contributors][contributors-url]
 
-For more information please go to the [main openMINDS repository](https://github.com/HumanBrainProject/openMINDS).
+
+The **openMINDS_core** repository hosts one of the metadata models of the **openMINDS metadata framework**. It defines modular metadata schemas for describing the general origin, location and content of neuroscience research products.
+
+To generally learn more about the openMINDS metadata framework please go to :arrow_right: [**ReadTheDocs**][docu-url].  
+Or explore directly the metadata schemas of the openMINDS_core metadata model under :arrow_right: [**Specifications**][docu-core-url].
 
 ## How to contribute
-Please check our [contribution document](https://github.com/HumanBrainProject/openMINDS/blob/main/CONTRIBUTING.md).
 
-## License
-This work is licensed under the MIT License.
+The openMINDS metadata framework is an open-source project and community contributions are highly appreciated.  
+If you want to contribute please follow our :arrow_right: [**contribution guidelines**][contribution-url].
+
 
-**Logo:** The openMINDS logo was created by U. Schlegel, based on an original sketch by C. Hagen Blixhavn and feedback by L. Zehl.
+<!-- MARKDOWN LINKS & IMAGES -->
+<!-- https://www.markdownguide.org/basic-syntax/#reference-style-links -->
+[contribution-url]: https://openminds-documentation.readthedocs.io/en/latest/shared/how_to_contribute.html
+[contributors-url]: https://img.shields.io/github/contributors/openMetadataInitiative/openMINDS_core
+[docu-url]: https://openminds-documentation.readthedocs.io
+[docu-core-url]: https://openminds-documentation.readthedocs.io/en/v3.0/specifications/core.html
+[license-url]: https://img.shields.io/github/license/openMetadataInitiative/openMINDS_core