added readme

README.md

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+# gCube System - File Upload Progress bar GWT Widget
+gCubeFile Upload progress bar.
+
+## Structure of the project
+
+* The source code is present in the src folder. 
+
+## Built With
+
+* [OpenJDK](https://openjdk.java.net/) - The JDK used
+* [Maven](https://maven.apache.org/) - Dependency Management
+
+## Documentation
+
+* Use of this service is described in the [Wiki](https://wiki.gcube-system.org/gcube/Sharing_Posts_and_using_News_feed).
+
+## Change log
+
+See [Releases](https://code-repo.d4science.org/gCubeSystem/share-updates/releases).
+
+## Authors
+
+* **Massimiliano Assante** ([ORCID](https://orcid.org/0000-0002-3761-1492)) - [ISTI-CNR Infrascience Group](https://www.isti.cnr.it/People/M.Assante)
+
+## Maintainers
+
+* **Massimiliano Assante** ([ORCID](https://orcid.org/0000-0002-3761-1492)) - [ISTI-CNR Infrascience Group](https://www.isti.cnr.it/People/M.Assante)
+
+## License
+
+This project is licensed under the EUPL V.1.1 License - see the [LICENSE.md](LICENSE.md) file for details.
+
+## About the gCube Framework
+This software is part of the [gCubeFramework](https://www.gcube-system.org/ "gCubeFramework"): an
+open-source software toolkit used for building and operating Hybrid Data
+Infrastructures enabling the dynamic deployment of Virtual Research Environments
+by favouring the realisation of reuse oriented policies.
+ 
+The projects leading to this software have received funding from a series of European Union programmes see [FUNDING.md](FUNDING.md)