We plan to support NSURLSession
Better example links to download
Fix SuProgressWebView example

You can't change the webView's delegate. Which typically is fine. We should provide an `unregister` type function though.

It would be nice to be better, but I'm not really a fan of even more swizzling in this library :/
Better progress for all types

Introducing a trickle system, which works better for UIWebView for the resource loading part.

The King has reduced responsibility and maybe can be removed.

This system should make it easier to make the SuProgressBar handle adding new progress types during existing monitoring operations, which seems necessary for this to be a good library.