Merge pull request #3 from stefz/master

CurrentViewController as public readonly property

Author: m4tbat

Pod/Classes/MBT3DGridViewController.h

@@ -41,6 +41,8 @@ typedef NS_ENUM(NSInteger, MBT3DGridTransitionDirection) {
 
 @interface MBT3DGridViewController : UIViewController
 
+@property (strong, nonatomic, readonly) UIViewController *currentContentViewController;
+
 @property (weak, nonatomic) id <MBT3DGridViewControllerDataSource> dataSource;
 
 @property (weak, nonatomic) id <MBT3DGridViewControllerDelegate> delegate;

Pod/Classes/MBT3DGridViewController.m

@@ -15,7 +15,7 @@ @interface MBT3DGridViewController () <UIViewControllerContextTransitioning>
 
 @property (assign, nonatomic, readwrite) MBT3DGridTransitionDirection transitionDirection;
 
-@property (strong, nonatomic) UIViewController *currentContentViewController;
+@property (strong, nonatomic, readwrite) UIViewController *currentContentViewController;
 @property (strong, nonatomic) UIViewController *nextContentViewController;
 
 @property (assign, nonatomic) BOOL transitionCanceled;