first check-in of UsefulBuf example
diff --git a/ub-example.h b/ub-example.h
new file mode 100644
index 0000000..6ed3626
--- /dev/null
+++ b/ub-example.h
@@ -0,0 +1,16 @@
+//
+//  ub-example.h
+//  QCBOR
+//
+//  Created by Laurence Lundblade on 4/8/22.
+//  Copyright © 2022 Laurence Lundblade. All rights reserved.
+//
+
+#ifndef ub_example_h
+#define ub_example_h
+
+#include <stdint.h>
+
+int32_t RunUsefulBufExample(void);
+
+#endif /* ub_example_h */