update installation guide

Author: annawendler

README.md

@@ -28,9 +28,14 @@ Tutorials can be started by clicking a file in the Workspace section. To switch
 
 ### Quick install
 
-All required dependencies for the tutorials are listed in `requirements.txt`. You can install them in a new virtual environment as follows:
+To execute the tutorials, we require the memilio-simulation package as well as further dependencies as listed in `requirements.txt`. You can install them in a new virtual environment as follows where we clone the MEmilio repository into this directory to install the memilio-simulation package:
 ```sh
 python -m venv venv
 source venv/bin/activate
 pip install -r requirements.txt
+
+git clone git@github.com:SciCompMod/memilio.git
+cd memilio/pycode/memilio-simulation
+pip install . 
+
 ```