changed docname to -gregw
renamed HEADERS to META_DATA,

It is should not be called headers when it can come at the beginning, middle or end of a stream.
Moved padding from HEADERS, DATA, CONTINUATION, PUSHPROMISE to interleaved octets

Padding be implemented as an alternative frame type rather than on a case by case basis by frame type.  Better padding schemes may well be able to be devised, but for now just moving it away from the frame type
definitions.