added arduino nfcReader files (#42)

Arduino/nfcReader/NDEF/Ndef.h

@@ -0,0 +1,16 @@
+#ifndef Ndef_h
+#define Ndef_h
+
+/* NOTE: To use the Ndef library in your code, don't include Ndef.h
+   See README.md for details on which files to include in your sketch.
+*/
+
+#include <Arduino.h>
+
+#define NULL (void *)0
+
+void PrintHex(const byte *data, const long numBytes);
+void PrintHexChar(const byte *data, const long numBytes);
+void DumpHex(const byte *data, const long numBytes, const int blockSize);
+
+#endif