Hi,
I downloaded your sample code, but "SimulatorDemo" has a "build failed" error. Reinstalled Xcode 6.4 (6E35b), but still failing! (MasterDetailDemo build succeeds)
I downloaded your Book 3 on iBooks: "Mastering Xcode 6 & Swift" - why do you refer to 2 different books on your website: Book 3: "Navigating Xcode 6" and Book 4: "Learn to Code in Swift"?
Thanks!
Chris