Update README.md

README.md

@@ -6,5 +6,6 @@ This page provides links to my repositories that contain public instances for a
 - [avionics_inst](https://gitlab.liu.se/eliro15/avionics_inst): avionics scheduling instances (collaboration with Saab).
 - [portfolio_inst](https://gitlab.liu.se/eliro15/portfolio_inst): instances for mean-variance portfolio optimization problems.
 - [underground_mining_instances](https://gitlab.liu.se/eliro15/underground_mining_instances): underground mining instances (collaboration with Boliden).
+-[multiprocessor_scheduling_inst](https://gitlab.liu.se/eliro15/multiprocessor_scheduling_inst): Multiprocessor scheduling instances with challenging characteristics.
 
 For questions, please contact me at elina.ronnberg@liu.se