New ASDelegateProxy class to unify logic for Table & Collection forwarding. Fix dealloc-during-animation crash.

examples/ASCollectionView/Sample/PresentingViewController.m

@@ -0,0 +1,30 @@
+//
+//  PresentingViewController.m
+//  Sample
+//
+//  Created by Tom King on 12/23/15.
+//  Copyright © 2015 Facebook. All rights reserved.
+//
+
+#import "PresentingViewController.h"
+#import "ViewController.h"
+
+@interface PresentingViewController ()
+
+@end
+
+@implementation PresentingViewController
+
+- (void)viewDidLoad
+{
+  [super viewDidLoad];
+  self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Details" style:UIBarButtonItemStylePlain target:self action:@selector(pushNewViewController)];
+}
+
+- (void)pushNewViewController
+{
+  ViewController *controller = [[ViewController alloc] init];
+  [self.navigationController pushViewController:controller animated:true];
+}
+
+@end