Add table of contents

README.md

 # MPS/RA VM - StudentVersion
 
+- [MPS/RA VM - StudentVersion](#mpsra-vm---studentversion)
+  - [What is different compared to the official VM?](#what-is-different-compared-to-the-official-vm)
+  - [Get the VM Image](#get-the-vm-image)
+    - [Downloads](#downloads)
+  - [Geany as replacement for SourceNavigator](#geany-as-replacement-for-sourcenavigator)
+    - [How to use geany with the tasks from RA & MPS labs](#how-to-use-geany-with-the-tasks-from-ra--mps-labs)
+  - [How to use the hda-util.sh (Desktop shortcuts)](#how-to-use-the-hda-utilsh-desktop-shortcuts)
+    - [Mounting the Network shares](#mounting-the-network-shares)
+    - [Connecting the _VPN_](#connecting-the-vpn)
+  - [Virtualbox Guest Additions (Automatic resize, shared disks)](#virtualbox-guest-additions-automatic-resize-shared-disks)
+  - [Building the VM from scratch](#building-the-vm-from-scratch)
+  - [Further notes](#further-notes)
+  - [Known issues](#known-issues)
+    - [System volume is on 0 by default](#system-volume-is-on-0-by-default)
+  - [Random screenshots](#random-screenshots)
+
 ## What is different compared to the official VM?
 - Based on current Debian buster (10.7) instead of Ubuntu 14.04 from 2014
 - New more modern Texteditor / lightweight IDE "geany" as replacement for snavigator. More info [below](#geany-as-replacement-for-sourcenavigator)