update readme

Author: Slasnista

README.md

@@ -136,7 +136,7 @@ The contributors to this library are:
 * [Laetitia Chapel](http://people.irisa.fr/Laetitia.Chapel/)
 * [Michael Perrot](http://perso.univ-st-etienne.fr/pem82055/) (Mapping estimation)
 * [Léo Gautheron](https://github.com/aje) (GPU implementation)
-* [Nathalie Gayraud]()
+* [Nathalie Gayraud](https://www.linkedin.com/in/nathalie-t-h-gayraud/?ppe=1)
 * [Stanislas Chambon](https://slasnista.github.io/)
 
 This toolbox benefit a lot from open source research and we would like to thank the following persons for providing some code (in various languages):