Turned Rendering chapter into Reading/Writing chapter to emphasize authoring methods.  Added link to docbook-utils.
Turned Rendering chapter into Reading/Writing chapter to emphasize authoring methods.  Added link to docbook-utils.

marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet