[yocto] example of Kernel work

[John Whitmore]

Found this nice little document on Kernel work in the yocto build system [1]
it's just a shame that it isn't up to date, to use against the current version
of the build system. 

Does anybody know is there a more up to date version of this document? It
might just be me but a worked example is so much cleared then writing about
the process.

[1] https://www.yoctoproject.org/sites/yoctoproject.org/files/elc2013-kernel-lab.pdf