Update README to include ConstraintGeometry reference

Author: th-skam

README.md

@@ -1,5 +1,6 @@
 ## Description
-This is a SOFA plugin (https://github.com/sofa-framework/sofa) that provides a customized collision pipeline, specifically designed to support needle insertion simulations.
+This is a SOFA plugin (https://github.com/sofa-framework/sofa) that provides a customized collision pipeline, specifically designed to support needle insertion simulations. 
+Works in conjunction with https://github.com/InfinyTech3D/ConstraintGeometry.
 
 ## Acknowledgments
 This project builds upon the original repository from [ICube Laboratory, University of Strasbourg](https://icube.unistra.fr/en/) and extends it with a needle insertion algorithm and additional functionality.