[LTP] [RFC PATCH 2/2] doc: Add user-guide.txt

[Petr Vorel]

Hi Cyril,

...
> > Yep, I'm aware ffsb is needed from $LTPROOT/bin. I haven't forced to send
> > proposal about ffbs adding into separate repository, that why I included it.
> > But sure, I'll drop this part.
> > Ack the rest?

> Yes, the rest is fine.

Thanks, merged, with simple change:

-For more info see `doc/user-guide.txt`.
+For more info see `doc/user-guide.txt` or online at
+https://github.com/linux-test-project/ltp/wiki/User-Guidelines.

(I created that page in wiki).

Kind regards,
Petr