REF : cleaned up file locations
DOC : Added workflow and git documentation
DOC : edits addressing some of Eric's comments
DEV : add sphinx output to .gitignore
DOC : addid helper file for rtd
DOC/WIP : work to re-format arch decisions into rst
DOC : More tweaks to architecture docs

 - some style changes
 - minor content changes to VC section
 - added missing sections
Merge pull request #11 from tacaswell/doc_work

Doc work