Update README.md

scripts/README.md

@@ -24,6 +24,8 @@ On debian-based system you can use this:
 Then, you can the execute the script and it will download the dune repositories and dumux
 and configure all modules with CMake
 ```bash
+  wget https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/-/raw/master/scripts/install.sh
+  chmod a+x install.sh
   ./install.sh
 ```
 This will clone the necessary repositories (in a subfolder 'dumux'),