Changed readme again

.renku/renku.ini

 [interactive]
 default_url = /lab
 mem_request = 8G
+lfs_auto_fetch = true
 
 [renku]
 autocommit_lfs = false

README.md

@@ -23,6 +23,9 @@ This has the advantage that you can save the changes to your notebook while work
 ## Starting a Session
 
 Click on the project and go to the Sessions tab, and click on the "New Session button".
+
+![Alt text](img/new_session.png )
+
 When opening a session the first time after forking the project, you will encounter the Docker Image no available Error. This is not a problem, just click on building the branch image. It will now build your docker image. This can take some minutes. Afterwards click on the "Start Session" button and you have a running session which looks like this:
 
 ![Alt text](img/session_overview.png )