View controller rotation for page view controller child view controllers

MMPageViewController.h

#import <UIKit/UIKit.h>

@interface MMPageViewController : UIPageViewController

@end

MMPageViewController.m

#import "MMPageViewController.h"

@implementation MMPageViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
    return YES;
}

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    [self.viewControllers enumerateObjectsUsingBlock:^(UIViewController *viewController, NSUInteger idx, BOOL *stop) {
        [viewController willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
    }];
}

@end