update contributors

Author: rflamary

CONTRIBUTORS.md

@@ -2,11 +2,16 @@
 
 ## Creators and Maintainers 
 
-This toolbox has been created and is maintained by:
+This toolbox has been created by
 
-* [Rémi Flamary](http://remi.flamary.com/)
+* [Rémi Flamary](https://remi.flamary.com/)
 * [Nicolas Courty](http://people.irisa.fr/Nicolas.Courty/)
 
+It is currently maintained by 
+
+* [Rémi Flamary](https://remi.flamary.com/)
+* [Cédric Vincent-Cuaz](https://cedricvincentcuaz.github.io/)
+
 ## Contributors
 
 The contributors to this library are:
@@ -58,4 +63,4 @@ This toolbox benefit a lot from open source research and we would like to thank
 
 POT has benefited from the financing or manpower from the following partners:
 
-<img src="https://pythonot.github.io/master/_static/images/logo_anr.jpg" alt="ANR" style="height:60px;"/><img src="https://pythonot.github.io/master/_static/images/logo_cnrs.jpg" alt="CNRS" style="height:60px;"/><img src="https://pythonot.github.io/master/_static/images/logo_3ia.jpg" alt="3IA" style="height:60px;"/>
+<img src="https://pythonot.github.io/master/_static/images/logo_anr.jpg" alt="ANR" style="height:60px;"/><img src="https://pythonot.github.io/master/_static/images/logo_cnrs.jpg" alt="CNRS" style="height:60px;"/><img src="https://pythonot.github.io/master/_static/images/logo_3ia.jpg" alt="3IA" style="height:60px;"/><img src="https://pythonot.github.io/master/_static/images/logo_hiparis.png" alt="Hi!PARIS" style="height:60px;"/>