Developer Primer and images, and a tweak to figure formatting
also renamed from Hypervisor Primer to just Developer Primer since the
doc talks about Device Model too.
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Add the "Introduction of Project Acorn" doc.
Also adds improvements to the doc generation processes, content styles,
removed doxygen-generated API material.
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
