replace % with vw units, closes #26
Minor fix in README.md

'client hints' was mistakenly used to describe a cookies behavior.
bump date
httpbis is now RFCs
unwrap paragraphs
don't need ref to server hints
tweak abstract
move 'relationship to ua header' up
there's just one example
clarify common syntax applicability
DPR -> Content-DPR
correct registry name
Informational -> standard

(that's how the registry works)
Get rid of CH-; addresses #24.
use correct terminology
Merge pull request #30 from mnot/edits

Edits
Merge pull request #28 from dpanov/master

Minor fix in README.md
add grunt tasks, move spec output to gh-pages
copy latest spec as index
update org affiliation