ABNF message format

[reschke]

We currently have:

  HTTP-message   = start-line
                   *( header-field CRLF )
                   CRLF
                   [ message-body ]

Maybe it would be more consistent to remove CRLF from start-line, and then to have

  HTTP-message   = start-line CRLF
                   *( header-field CRLF )
                   CRLF
                   [ message-body ]

[mnot]

LGTM.

[reschke]

...waiting until #197 is resolved...