Rename CK classes to AS classes

AsyncDisplayKit/TextKit/ASTextNodeTypes.h

@@ -0,0 +1,12 @@
+/* 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.
+ */
+
+#pragma once
+
+// Use this attribute name to add "word kerning"
+static NSString *const ASTextNodeWordKerningAttributeName = @"ASAttributedStringWordKerning";