Updated README.md

README.md

-# Role-based Runtime Model Synchronization (Running Example)
+# Resolving Conflicts in Role-based Multimodel-Synchronization
 
 Supplementary material for the [COP 2021](https://conf.researchr.org/track/ecoop-issta-2021/ecoop-issta-2021-cop) publication *"Resolving Synchronization Conflicts in Role-based Multimodel-Synchronization Environments"* by Sebastian Ebert, Tim Kluge , Sebastian Götz, Uwe Aßmann and Christopher Werner.