Update readme; improve startup

Readme.md

@@ -25,15 +25,17 @@ Mobile Cartography Jupyter Lab Workshop.
 3. [Login to HPC][login-zih-link-barnard]
     - You'll be requested to login using your TUD Account
 4. Select `Barnard - 2 core, 3G, 4 hours` or `Romeo - 2 core, 3G, 4 hours`
-4. **Click Start** to spawn a Jupyter Lab instance on the TUD ZIH Jupyter Hub.  
-    - The Workshop is _not_ automatically setup in the new system yet
-    - Once JupyterHub started, open a `Terminal` Window  
-      ![Startup Jupyter Hub](resources/terminal_jup.webp)
-    - .. and copy &paste the following command, confirm with <kbd>Enter</kbd>:
+5. **Click Start** to spawn a Jupyter Lab instance on the TUD ZIH Jupyter Hub.
+6. Clone the workshop files
+   - Once JupyterHub started, open a new empty Python Notebook with click on the following icon:  
+      ![Startup Jupyter Hub](resources/python_jup.webp)
+    - .. and copy &paste the following command in the first cell:
     ```bash
-    cd /home/$USER && \
+    !cd /home/$USER && \
         git clone https://gitlab.hrz.tu-chemnitz.de/tud-ifk/jupyter_python_datascience.git
     ```
+    - run with <kbd>SHIFT+Enter</kbd>  
+      ![Startup Jupyter Hub](resources/clone.webp)
     - this will download the workshop material to your local user folder (explorer on the left side)
     - in the explorer on the left, open the file `jupyter_python_datascience/notebooks/01_raw_intro.ipynb`  
       ![Startup Jupyter Hub](resources/notebook_jup.webp)