i follow all the steps which included in this web but its not working.
not working is rather ambiguous.
Can you post the parts you have .h and .cpp file
be aware that you must try with the simplest possible and build it up in small steps.
And what is "this web".
I'd recommend starting with a known, working library, then customize a copy
of it (ie rename, strip out the guts and just write one begin() method that
just prints "hello world" or something). Be careful not to damage the