Fixed code blocks in readme and also small change to Authors

README.md

 # Schedule Randomization Repo
 
 ## Authors
-The owner (and main contributor) of this repo is Nils Vreman.  
+The owner (and main contributor) of this repo: Nils Vreman.  
 Collaborators: Richard Pates, Kristin Krüger, Gerhard Fohler, Martina Maggio.
 
 ## Running tests