Here's what's going on in the publishing industry this week: It's JFK month. Makes sense, since this year marks the 50th anniversary of his election. On Monday The Perseus Books Group, along with NBC News, released a new iPad app, JFK: 50 Days. The app complements the new book, "JFK Day by Day," and it features 50 days of JFK's presidency, including rare footage from … [Read more...] about This Week in Publishing