Merge pull request #59 from reschke/master

typos, references, RFC2119 terms
start gin.
bump version
remove 'tls for http uris' - already being done
remove wpad; too many issues around it.
remove 'living with interception' - probably not productive
add 'potential'
qualify the place of proxies
note that wpad security is a blocking issue for implementation.
note layer 8 nature of interception
more on security
remove badly formed interop arg
make "no" section less speculative
remove fuzzy 'choices' section
add 'improved network information'
ack julian
update xml
update
put http-encryption-encoding under git
speling