Add coverage to README.md [ci skip]
Add coverage to README.md [ci skip]

peteruhnak/smalltalkCI,peteruhnak/smalltalkCI,dalehenrich/smalltalkCI,dalehenrich/smalltalkCI,dalehenrich/smalltalkCI,fniephaus/filetreeCI,hpi-swa/smalltalkCI,peteruhnak/smalltalkCI,fniephaus/filetreeCI,fniephaus/filetreeCI,hpi-swa/filetreeCI,hpi-swa/smalltalkCI,hpi-swa/filetreeCI,hpi-swa/filetreeCI