initial version of handwired/fivethirteen (#462)

keyboards/handwired/fivethirteen/fivethirteen.c

@@ -0,0 +1,8 @@
+#include "fivethirteen.h"
+
+void matrix_init_kb(void) {
+	// put your keyboard start-up code here
+	// runs once when the firmware starts up
+
+	matrix_init_user();
+}