ESP8266+arduino uno

Hi.
I going to ESP8266_Shield_HardSer compile but An error message has come out.

Arduino: 1.6.5 (Windows 8.1), boad:“Arduino/Genuino Uno”

ESP8266_Shield_SoftSer.ino:33:29: fatal error: ESP8266_SoftSer.h: No such file or directory
compilation terminated.

please help me

Can you post your code?