Within Classes>AppDeligate.m
scroll to the bottom and remove the references to Portrait and UpsideDown. It sould look like this when finished:
- (NSUInteger)application:(UIApplication*)application supportedInterfaceOrientationsForWindow:(UIWindow*)window
{
// iPhone doesn't support upside down by default, while the iPad does. Override to allow all orientations always, and let the root view controller decide what's allowed (the supported orientations mask gets intersected).
NSUInteger supportedInterfaceOrientations = (1 << UIInterfaceOrientationLandscapeLeft) | (1 << UIInterfaceOrientationLandscapeRight);
return supportedInterfaceOrientations;
}