Fix linking

submodules/AsyncDisplayKit/Source/ASMainSerialQueue.h

@@ -0,0 +1,19 @@
+//
+//  ASMainSerialQueue.h
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import <Foundation/Foundation.h>
+#import <AsyncDisplayKit/ASBaseDefines.h>
+
+AS_SUBCLASSING_RESTRICTED
+@interface ASMainSerialQueue : NSObject
+
+@property (nonatomic, readonly) NSUInteger numberOfScheduledBlocks;
+- (void)performBlockOnMainThread:(dispatch_block_t)block;
+
+@end