[Travis CI] move carthageBuildTest to examples_extra to avoid Travis error

examples_extra/CarthageBuildTest/CarthageExample/ViewController.m

@@ -0,0 +1,47 @@
+//
+//  ViewController.m
+//  Sample
+//
+//  Created by Engin Kurutepe on 23/02/16.
+//
+//  Copyright (c) 2014-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under the BSD-style license found in the
+//  LICENSE file in the root directory of this source tree. An additional grant
+//  of patent rights can be found in the PATENTS file in the same directory.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+//  FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+//  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+//  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+@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