Link to actual setting in chrome://flags

Unfortunately, Chrome's security policies prevent me from actually
linking to this page; otherwise I would just do that.
Compat table, setInterval -> setTimeout, setTimeout anim loop

to help flesh out some of these techniques a bit.
Use .then() on promises

since that's the standard; jQuery's .done() is just syntactic sugar.
Move node-style callbacks below async.series(), async.parallel()

so that we can explain it afterwards.
Add chained promise example

to bring us back to the pyramid of doom, and see how promises help
manage it.
Move timing section to the end

as a sort of mental cooldown from generators.
Add helpful images

Not sure if the "helpful" part is accurate, but they should break the
monotony a bit.
Expand gg section a bit

It was very terse before, whereas now it's a touch more readable.