Move architecture diagrams under a diagram directory
#16 - Add JSON Schema definitions for node and payload structures
Remove version numbers from architecture diagrams
#16 - Modify protocol structure definitions
Clarify non-normative attribute examples
Remove empty constraints subsection
Update Overview section of protocol
Attempt to add table of contents
Add table of contents
Fix indents in table of contents
Rewrite GET external interfaces and tweak internal routines
Minor tweaks to lead-in
Replace schema files with a single schema.json
Update protocol based on casa-schema
Merge pull request #18 from ebollens/structural_definitions

Add Schema, Rewrite Protocol Structures & Interfaces and Revise Protocol Document