Edit README.md for accuracy, brevity, clarity, completion
Edit CONTRIBUTING.md for clarity.
Edit installation guide for accuracy, clarity, completion
Edit accounts usage guide for accuracy, clarity, completion
Edit client usage guide for accuracy, clarity, completion
Add initial draft of overall usage guide

Add API coverable table.

Add implementation checklist.
Generate table of contents for longer guide pages
Add more structure to the implementation checklist
Merge pull request #35 from 3dna/documentation-1

Expand documentation #1

Complete first round of documentation. Mostly
editing. Filled in overall usage guide. Also added
toc's.