[README] do not instruct to use course install script

README.md

@@ -16,14 +16,24 @@ Depending on whether you already have DuMu<sup>x</sup> installed or not, choose
 
 ### Install DuMu<sup>x</sup> together with the course
 
-The easiest way to install everything you need is to follow the steps in the [install script](https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/-/blob/master/scripts/README.md).
-This will install everything for you to get directly started.
+The easiest way to install everything you need is to use the install scripts provided in DuMu<sup>x</sup>,
+for instance, with this sequence of commands:
+
+```bash
+wget https://git.iws.uni-stuttgart.de/dumux-repositories/dumux/raw/releases/3.5/bin/installdumux.py
+python3 installdumux.py --dumux-version 3.5 --dune-version 2.8
+python3 dumux/bin/installexternal.py course
+./dune-common/bin/dunecontrol --opts=./dumux/cmake.opts all
+```
+
+If you don't have `wget` and don't want to install it, you can just manually download the
+`installdumux.py` script from the git repository.
 
 ### Install the course into your existing DuMu<sup>x</sup> project
 
 If you already have an installation of DuMu<sup>x</sup>,
-navigate to your common DuMu<sup>x</sup> root directory `cd yourInstallationFolder/dumux` and then run the following commands:
-
+navigate to your DuMu<sup>x</sup> root directory `cd yourInstallationFolder`
+and then run the following commands:
 
 ```bash
 python3 dumux/bin/installexternal.py course
@@ -33,5 +43,18 @@ python3 dumux/bin/installexternal.py course
 This will download and then configure the course repository using `dunecontrol`.
 After this, you can start with the [exercises](https://git.iws.uni-stuttgart.de/dumux-repositories/dumux-course/-/tree/master/exercises).
 
+### Requirements
+
+For a successful installation and the execution of all exercises, the following
+requirements are needed:
+
+  * gcc >= 7
+  * cmake >= 3.13
+  * git
+  * pkg-config
+  * paraview (to visualize the results)
+  * gnuplot (to plot some curves)
+  * wget (to download some config files during the installation)
+
 
-Last updated for: __DuMu<sup>x</sup> release 3.4 in June 2021__.
+Last updated for: __DuMu<sup>x</sup> release 3.5 in May 2022__.