shorten alpn token from HTTP/2.0 to h2
update XSLTs; update references to httpbis -25
Update overview.
Correct previous update.
Add Martin's correction for 'characters'.
Change 'byte' to 'octet'
Update examples with Huffman.
re-apply change 1f11d9d4d4e123de5d3b9f38d97439e0ad56187d (httpbis references)
Updated HTTP/1.1 reference.
update issues json
fix http2 reference
add links to http/2 home page
add meta viewport
use width=device-width
Nah, let's use initial-scale. And put it in the CSS for good measure.
remove trailing spaces
close meta tag.
Remove trailing spaces.
Merge branch 'master' of https://github.com/http2/http2-spec
Update examples.

Add some simple examples for each header representation.
Modify request/response examples to show more features.
Solves #313 (break down examples into smaller artwork fragments).
Solves #321 (use example host names).
Solves #297 (all suggested example are covered).