modbus compile error

http://www.cooking-hacks.com/documentation/tutorials/modbus-module-shield-tutorial-for-arduino-raspberry-pi-intel-galileo\

i DOWNLOADE MODBUS LIBRARY FROM BELOW LINK. i AM GETTING ERROR as FOLLOW.LET ME KNOW HOW TO RESOLVE THE ISSUE.

HERE THEY DECLARING HEADER FILE DIFFERENT WAY.

ERROR MSG SHOWN BELOW.

Arduino: 1.5.8 (Windows 8), Board: “Arduino Uno”

In file included from ModbusMaster485.cpp:25:0:
ModbusMaster485.h:59:28: fatal error: …/RS485/RS485.h: No such file or directory
#include <…/RS485/RS485.h>
^
compilation terminated.
Error compiling.

This report would have more information with
“Show verbose output during compilation”
enabled in File > Preferences.

First I suggest you get your Caps Lock key looked at. It seems to be working backwards.