Add routing support

[robertodecurnex]

In order to enable JSONp just for some routes and not for the whole app a routing system must be set in place.

[robertodecurnex]

Is that Mel Gibson? Really? LoL

Checking your code, ty!

[MGPalmer]

No, that's a picture of me, of course ;)

[gmcnaughton]

+1 for the patch and +1 for the Mel Gibson avatar!

For flexibility it might be nice to have :only / :except / :if / :unless (a whitelisted prefix could be implemented as an :if proc). But maybe that's overkill -- having a prefix whitelist is a good start!

[joelr]

👍