Add an example project which tests Carthage build

examples/CarthageBuildTest/CarthageExample/ViewController.m

@@ -0,0 +1,36 @@
+//
+//  ViewController.m
+//  CarthageExample
+//
+//  Created by Engin Kurutepe on 23/02/16.
+//  Copyright © 2016 Engin Kurutepe. All rights reserved.
+//
+
+@import AsyncDisplayKit;
+
+#import "ViewController.h"
+
+@interface ViewController ()
+
+@end
+
+@implementation ViewController
+
+- (void)viewWillAppear:(BOOL)animated {
+    [super viewWillAppear:animated];
+    
+    CGSize screenSize = self.view.bounds.size;
+    
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+        ASTextNode *node = [[ASTextNode alloc] init];
+        node.attributedString = [[NSAttributedString alloc] initWithString:@"hello world"];
+        [node measure:(CGSize){.width = screenSize.width, .height = CGFLOAT_MAX}];
+        node.frame = (CGRect) {.origin = (CGPoint){.x = 100, .y = 100}, .size = node.calculatedSize };
+        
+        dispatch_async(dispatch_get_main_queue(), ^{
+            [self.view addSubview:node.view];
+        });
+    });
+}
+
+@end