 //
 
 import UIKit
+
+public let defaultTransitionDuration: NSTimeInterval = 0.5
 
 public protocol MCMHeaderAnimatedDelegate {
     

            container!.addSubview(headerIntermediate)
        }
        
        UIView.animateWithDuration(duration, delay: 0.0, options: [], animations: {
            if self.mode == .Present {
                fromView.alpha = alpha
                toView.transform = CGAffineTransformIdentity

            } else {
                transitionContext.completeTransition(true)
            }
        }
        
    }
    
