Allow ASEditableTextNode to scroll

AsyncDisplayKit/ASEditableTextNode.h

@@ -23,6 +23,11 @@ NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark - Configuration
 
+/**
+ @abstract Enable scrolling on the textView
+ */
+@property (nonatomic) BOOL scrollEnabled;
+
 /**
   @abstract Access to underlying UITextView for more configuration options.
   @warning This property should only be used on the main thread and should not be accessed before the editable text node's view is created.