项目需求中需要用到这种效果，正好记录一下
push：
EleeController *createNewCtrl = [[EleeController alloc]init];
createNewCtrl.isFromEdit = YES;
CATransition *transition = [CATransition animation];
transition.duration = 0.35f;
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
[self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
[self.navigationController pushViewController:createNewCtrl animated:NO];
pop：
CATransition* transition = [CATransition animation];
transition.duration =0.4f;
transition.type = kCATransitionReveal;
transition.subtype = kCATransitionFromBottom;
[self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
[self.navigationController popViewControllerAnimated:NO];