General re-write to make the chapter Yocto Project friendly.
Weeded out the references to "Poky."
(From yocto-docs rev: ac4fc6082f458e5ee60962693ee332bbf1e3c1a9)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>