update readme

Author: fabinsch

README.md

@@ -15,7 +15,9 @@ Through **ProxSuite**, we aim at offering to the community scalable optimizers w
 
 **ProxSuite** is actively developped and supported by the [Willow](https://www.di.ens.fr/willow/) and [Sierra](https://www.di.ens.fr/sierra/) research groups, joint research teams between [Inria](https://www.inria.fr/en), [École Normale Supérieure de Paris](https://www.ens.fr) and [Centre National de la Recherche Scientifique](https://www.cnrs.fr).
 
-**ProxSuite** is integrated into the [CVXPY](https://www.cvxpy.org/) modeling language for convex optimization problems and into [CasADi](https://web.casadi.org/)'s symbolic framework for numerical optimization in general and optimal control.
+**ProxSuite** is integrated into:
+- [CVXPY](https://www.cvxpy.org/) modeling language for convex optimization problems
+- [CasADi](https://web.casadi.org/)'s symbolic framework for numerical optimization in general and optimal control. ProxQP is available in CasADi as plugin to [solve quadratic programs](https://web.casadi.org/docs/#quadratic-programming).
 
 ## Getting started