Add ASViewController example

examples/ASViewController/Sample/main.m

@@ -0,0 +1,16 @@
+//
+//  main.m
+//  Sample
+//
+//  Created by Michael Schneider on 3/5/16.
+//  Copyright © 2016 AsyncDisplayKit. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+    @autoreleasepool {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}