Update to Provisional READ.me

[orcmid]

Add some text

Point out that Issues, Discussion, and Projects are under development
'
Identify the Spiraling approach

To the project

To documentation efforts

The key experiements and the objective

The only Document Engineering for docEng itself is mainly around the use of GitHub and the annotation structure of scaffolding manifests and TODOs. The exemplary document production for docEng iself is just for the web site and the wiki.