Implemented macOS Support

Example/Example for lottie-macos/AppDelegate.m

@@ -0,0 +1,27 @@
+//
+//  AppDelegate.m
+//  Example for lottie-macos
+//
+//  Created by Oleksii Pavlovskyi on 2/2/17.
+//  Copyright © 2017 Brandon Withrow. All rights reserved.
+//
+
+#import "AppDelegate.h"
+
+@interface AppDelegate ()
+
+@end
+
+@implementation AppDelegate
+
+- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
+    // Insert code here to initialize your application
+}
+
+
+- (void)applicationWillTerminate:(NSNotification *)aNotification {
+    // Insert code here to tear down your application
+}
+
+
+@end