Add tracking

[bquandt]

Great zappa example of a URL shortener! Love how simple and elegant this is, eg via using object rewrite rule.

Was looking at how one might use this as a starting point to add tracking as well, anyone have any thoughts? Not sure you could severless, .i.e., was looking for an appropriate AWS event (like an object read), which could then fire off a service tied to either google analytics, or facebook pixels.