Update README.md to include releases.

README.md

@@ -7,7 +7,14 @@ evaluate shear experiments done at the Helmholtz Laboratory for Tectonic
 Modelling. In principle, it may be used for other measurements done in a
 similar setup, but it was build with our standardized workflow in mind.
 
-# Installation
+# Installation / Download
+
+Download the latest Windows release: [setup_RST_pick_GUI.exe](/uploads/fd500dbf0eac3dba20234be7bb8633cb/setup_RST_pick_GUI.exe)
+
+## Windows
+Install the above setup and run it.
+
+## Linux or Command Line
 This software is programmed in Python 3 using several external modules and
 therefore requires these to run. You can find the newest version of Python at
 [here (external link!)](https://python.org). At the time of writing this was