Added dirty pull of IATIRegistry.org records with resources as JSON files.

Running this will download 10 of the IATI Registry Datasets as JSON files in /datasets. Update ^iLimit^ to 0 to download them all. Yes, it will download them all in one go but buffering didn't seem to work with the API call.

Don't forget to grab the *ckanapi* module from https://github.com/wardi/ckanapi/commit/356d5a607305aa2e983637895f94bedacb080e32