It could go:
'No' vote on Sunday > Five Star win an early 2017 election > and call and win a referendum on leaving the Eurozone > end of Eurozone.
More likely it will be 'Yes' vote on Sunday > markets calm down, 'normality' resumes. But these days, who knows?
And as the article says, while a 'No' vote may not trigger all those other events, markets will react as though they will.