Added block handler for state transition

Classes/KLNoteViewController.h

@@ -7,6 +7,7 @@
 //
 
 #import <UIKit/UIKit.h>
+
 @class KLNoteViewController;
 @class KLControllerCard;
 @protocol KLNoteViewControllerDataSource;
@@ -26,6 +27,8 @@ enum {
 };
 typedef UInt32 KLControllerCardPanGestureScope;
 
+typedef void (^transitionStateBlock)(UIViewController* viewController, KLControllerCardState fromState, KLControllerCardState);
+
 @protocol KLControllerCardDelegate <NSObject>
 @optional
 //Called on any time a state change has occured - even if a state has changed to itself - (i.e. from KLControllerCardStateDefault to KLControllerCardStateDefault)
@@ -57,6 +60,7 @@ typedef UInt32 KLControllerCardPanGestureScope;
 @property (nonatomic, strong) UITapGestureRecognizer* tapGesture;
 -(id) initWithNoteViewController: (KLNoteViewController*) noteViewController
                andViewController:(UIViewController*) viewController;
+
 -(void) toggleStateAnimated:(BOOL) animated;
 -(void) setState:(KLControllerCardState) state animated:(BOOL) animated;
 -(void) setYCoordinate:(CGFloat)yValue;
@@ -65,7 +69,7 @@ typedef UInt32 KLControllerCardPanGestureScope;
 
 //KLNoteViewController manages the cards interfacing between the various cards
 @interface KLNoteViewController : UIViewController  <KLControllerCardDelegate>
-
+@property (nonatomic, copy) transitionStateBlock stateTransitionBlock;
 @property (nonatomic, weak) id<KLNoteViewControllerDataSource> dataSource;
 @property (nonatomic, weak) id<KLNoteViewControllerDelegate> delegate;
 

Classes/KLNoteViewController.m

@@ -233,7 +233,6 @@ -(void) removeControllerCardFromSuperView {
     }
 }
 
-
 - (NSArray*) controllerCardsAboveCard:(KLControllerCard*) card {
     NSInteger index = [self indexForControllerCard:card];
 
@@ -316,6 +315,9 @@ -(void) controllerCard:(KLControllerCard*)controllerCard didChangeToDisplayState
 
 }
 -(void) noteViewController: (KLNoteViewController*) noteViewController didUpdateControllerCard:(KLControllerCard*)controllerCard toDisplayState:(KLControllerCardState) toState fromDisplayState:(KLControllerCardState) fromState {
+    if (self.stateTransitionBlock) {
+        self.stateTransitionBlock(controllerCard.viewController, fromState, toState);
+    }
     if ([self.delegate respondsToSelector:@selector(noteViewController:didUpdateControllerCard:toDisplayState:fromDisplayState:)])
     {
         [self.delegate noteViewController:self