Adds some initial crude documentation of the Stack Exchange chat API.
Merge pull request #57 from Manishearth/test

Adds some initial crude documentation of the Stack Exchange chat API
Documents some more Stack Exchange URLs.

/messages/X/star
/messages/X/owner-star
/rooms/thumbs/X
/admin/movePosts/X

[skip ci]
Documents a bit more, and stores the `message_owner_stars` field.
Adds examples/web_viewer.py, a simple browser-based chat viewer.

We're not building a JavaScript application here, so we are never going
to put any state exclusively in the JavaScript; it's just going to be
some Angular templates reflecting state that's frequently updated from
the server.

We could add inputs, later, but those should just immediately post to
our server, they shouldn't touch the client-side state.
Merge branch 'master' into message-class

Conflicts:
	chatexchange/events.py
Merge branch 'web-example' into message-class.

This now reflects changes to messages (edits, starrings, etc.)

ref #51
Fixes obsolete references to event.text_content in examples/chat.py.