Added sample project using networking and infinite scrolling and random cats

examples/CatDealsCollectionView/Sample/PlaceholderNetworkImageNode.m

@@ -0,0 +1,18 @@
+//
+//  PlacholderNetworkImageNode.m
+//  Sample
+//
+//  Created by Samuel Stow on 1/14/16.
+//  Copyright © 2016 Facebook. All rights reserved.
+//
+
+#import "PlaceholderNetworkImageNode.h"
+
+@implementation PlaceholderNetworkImageNode
+
+- (UIImage *)placeholderImage {
+  return self.placeholderImageOverride;
+}
+
+
+@end