Update README.md (#33)

* Update README.md

add description how to install "--pre" versions of the repository.

* Update README.md

changed them to it as suggested by @manke-cubert

Author: Benjamin Müller

README.md

@@ -40,6 +40,12 @@ pip install cuvis
 or add `cuvis` to your project `requirements.txt` or `setup.py`.
 We currently provide pre-compiled binaries for Python 3.9, 3.10, 3.11 and 3.12 for Windows 64-bit.
 
+To access the newest python cuvis version (for use with SDK beta versions, etc) you can install it with
+
+```
+pip install cuvis --pre
+```
+
 ### Via repository
 
 If you wish to download and use the newest development cuvis locally, clone the git repository