fixed include for tinypinchange

Author: Erik Kettenburg

libraries/DigisparkSoftSerial/SoftSerial.h

@@ -41,7 +41,7 @@ The latest version of this library can always be found at
 #include <inttypes.h>
 #include <Stream.h>
 
-#include "../TinyPinChange/TinyPinChange.h"
+#include "<TinyPinChange.h>"
 
 /******************************************************************************
 * Definitions