Knock. Knock. “Who’s there?” CrunchWeek! OK, fine…it wasn’t funny. Welcome to another episode of CrunchWeek, TechCrunch’s weekly roundup show where we talk the biggest things in tech. This week we’re chatting about Theranos’ impending battle with the FDA, Square going for the IPO, Twitter laying off some staff and Ballmer becomes a fan (but not of… Read More