fixed title
moved discovery to .well-known/bb/
gave recommendations on "sub" construction
added trust bundle discovery mechanism
added explanatory text to intro and section tags to facilitate future spec surgery
added process list to trusted registration
entropy and state requirements
send_email_to scope explained
updates
Merge pull request #2 from jricher/gh-pages

Updates
Added seq diagrams; client app/instance explanation; minor edits
re-tidy'ed HTML and formatting tweaks