Correct send/recv PUSH_PROMISE frame text, as associated streams aren't affected.
Improve the "Figure 2: Stream States" ASCII-art diagram to show
whether a frame is being sent, received or both with each transition.
This makes the diagram 4 characters wider.
Add my name as I've made previous changes via email to Martin,
and made the previous two git commits.
Splits either in send+recv.
Tweaks diagram.
Merge pull request #659 from hruellan/diagram

Replaces either with send+recv