update readme

Author: jan-br

README.md

@@ -24,5 +24,4 @@ it is possible to recreate the unreleased version.
 
 ## Setup
 1. Clone the project
-2. Set the VM option ``-Dorg.lwjgl.librarypath="<path_to_project>/run/natives"``
-3. Set the working directory to ``./run``
+2. Execute the gradle task ``run``