Change: README to reflect new development plan
Change: README to reflect new development plan

Some minor changes were made to the overal development plan. Among
these changes are the prioritizing of async events and specification
of a persistent storage API over updates to the relationship and
property API.

Signed-off-by: Kevin Conway <3473c1f185ca03eadc40ad288d84425b54fd7d57@gmail.com>

kevinconway/Deferred.js,kevinconway/Deferred.js,kevinconway/Defer.js,kevinconway/Defer.js,kevinconway/Event.js,kevinconway/Modelo.js,kevinconway/Event.js,kevinconway/Event.js,kevinconway/Modelo.js,kevinconway/Modelo.js