* Updated pre-reqs for 0.9. * Fixed a couple of docker to Docker. * Fixed the Docker build example to be correct. * Reformatted a bunch of paragraphs Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01) Upstream-commit: 046e6604e56ec93647550630fcf729c7e5ab3280 Component: engine