All steps in the guide worked well, except for one manual change, without which I was getting a runtime error:

In didFinishLaunchingWithOptions of AGAppDelegate.m, I had to manually change the line:
from: self.viewController = [[AGViewController alloc] initWithNibName:@"AGViewController" bundle:nil];
to: self.viewController = [[AGViewController alloc] initWithStyle:UITableViewStylePlain];

It'd be great if this change is reflected in the guide: http://aerogear.org/docs/guides/GetStartedwithAeroGearandXcode/