Fix SIMULATE_WEB_RESPONSE not imported (#450)

* fix SIMULATE_WEB_RESPONSE not imported (Reported in #449).

* changes per review

* Update license of ViewController.m

examples/ASCollectionView/Sample/ViewController.m

@@ -16,7 +16,7 @@
 //
 
 #import "ViewController.h"
-
+#import "AppDelegate.h"
 #import <AsyncDisplayKit/AsyncDisplayKit.h>
 #import "SupplementaryNode.h"
 #import "ItemNode.h"
@@ -82,18 +82,18 @@ - (void)viewDidLoad
     {
       NSLog(@"ViewController is not nil");
       strongSelf->_data = [[NSArray alloc] init];
-      [strongSelf->_collectionView performBatchUpdates:^{
-        [strongSelf->_collectionView insertSections:[[NSIndexSet alloc] initWithIndexesInRange:NSMakeRange(0, 100)]];
+      [strongSelf->_collectionNode performBatchUpdates:^{
+        [strongSelf->_collectionNode insertSections:[[NSIndexSet alloc] initWithIndexesInRange:NSMakeRange(0, 100)]];
       } completion:nil];
-      NSLog(@"ViewController finished updating collectionView");
+      NSLog(@"ViewController finished updating collectionNode");
     }
     else {
-      NSLog(@"ViewController is nil - won't update collectionView");
+      NSLog(@"ViewController is nil - won't update collectionNode");
     }
   };
 
   dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), mockWebService);
-  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(4 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
     [self.navigationController popViewControllerAnimated:YES];
   });
 #endif