* Restructure existing Reference docs
Restructure Reference section for site to better match k8s.io. Change
descriptions to complete sentences. Improve instructions to locally load
site.
* Document AnnotationsTransformer on site
Dcoument AnnotationsTransformer API under Reference on site.
* Document required fields
Document required fields and explain effects of optional ones.
* Make site setup instructions more explicit
* Link required K8s fields
