#49 Adding support for C++

Ethernet/W5100S/w5100s.h

@@ -42,6 +42,10 @@
 #ifndef	_W5100S_H_
 #define	_W5100S_H_
 
+#ifdef __cplusplus
+extern <EFBFBD><EFBFBD>C<EFBFBD><EFBFBD> {
+#endif
+
 #include <stdint.h>
 #include "wizchip_conf.h"
 
@@ -3310,6 +3314,10 @@ void wiz_delay_ms(uint32_t ms);
 #endif
 /// @endcond
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif //_W5100S_H_