Start of the new section on the closer look into the development
environment.
(From yocto-docs rev: e1f1cee951433144d1adedcb4f0bbc8d8296c444)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>