i tried to do all methods to install ultrasonic library and it appears in the Example but when i click on verify i see this message 
Why ?!!!!!!!!!
Arduino: 1.6.0 (Windows 7), Board: "Arduino Uno"
In file included from UltrasonicDemo.pde:1:0:
C:\Users\user\Documents\Arduino\libraries\Ultrasonic/Ultrasonic.h:11:22: fatal error: WProgram.h: No such file or directory
#include "WProgram.h"
^
compilation terminated.
Error compiling.
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