Add information in the README

Update README with common template

README.md

 # Voronoi
 
+<!-- badges: start -->
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+[![Twitter](https://img.shields.io/twitter/follow/Icy_BioImaging?style=social)](https://twitter.com/Icy_BioImaging)
+[![Image.sc forum](https://img.shields.io/badge/discourse-forum-brightgreen.svg?style=flat)](https://forum.image.sc/tag/icy)
+<!-- badges: end -->
+
+This is the repository for the source code of *Voronoi*, a plugin for the [bioimage analysis software Icy](http://icy.bioimageanalysis.org/), which was developed by members or former members of the [Biological Image Analysis unit at Institut Pasteur](https://research.pasteur.fr/en/team/bioimage-analysis/). This plugin is licensed under GPL3 license.     
+Icy is developed and maintained by [Biological Image Analysis unit at Institut Pasteur](https://research.pasteur.fr/en/team/bioimage-analysis/). The [source code of Icy](https://gitlab.pasteur.fr/bia/icy) is also licensed under a GPL3 license.     
+
+
+
+## Plugin description
+
+<!-- Short description of goals of package, with descriptive links to the documentation website --> 
+
+        
+A more detailed user documentation can be found on the Voronoi documentation page on the Icy website: No documentation yet.               
+
+
+## Installation instructions
+
+For end-users, refer to the documentation on the Icy website on [how to install an Icy plugin](http://icy.bioimageanalysis.org/tutorial/how-to-install-an-icy-plugin/).      
+
+For developers, see our [Contributing guidelines](https://gitlab.pasteur.fr/bia/icy/-/blob/master/CONTRIBUTING.md) and [Code of Conduct](https://gitlab.pasteur.fr/bia/icy/-/blob/master/CODE-OF-CONDUCT.md).      
+
+<!--  Here we should have some explanations on how to fork this repo (for an example see https://gitlab.pasteur.fr/bia/wellPlateReader). Add any info related to Maven etc. How the project is build (for an example see https://gitlab.pasteur.fr/bia/wellPlateReader). Any additional setup required (authentication tokens, etc).  -->
+
+
+## Main functions and usage
+
+<!-- list main functions, explain architecture, classname, give info on how to get started with the plugin. If applicable, how the package compares to other similar packages and/or how it relates to other packages -->
+
+Classname: `No classname yet.`
+
+
+
+## Citation 
+
+Please cite this plugins as follows:          
+
+
+Please also cite the Icy software and mention the version of Icy you used (bottom right corner of the GUI or first lines of the Output tab):     
+de Chaumont, F. et al. (2012) Icy: an open bioimage informatics platform for extended reproducible research, [Nature Methods](https://www.nature.com/articles/nmeth.2075), 9, pp. 690-696       
+http://icy.bioimageanalysis.org    
+
+
+
+## Author(s)      
+
+
+
+
+## Additional information
+
+
+
+
+
+