Now we have a contributor guide combining various wiki pages, point at
that.
(From OE-Core rev: 43a3ab6b412186b6c7494e928809662c4ec462f9)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
The READMEs are often viewed from websites so switch to markdown format which is
much as readable as text and much better from html in broswers.
(From OE-Core rev: a9f366a883e4a5dcc364ca2841615c5acc494439)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>