This is an updated version of the AFNetworking Crash Course tutorial on Ray Wenderlich's website. This is updated to include the new version of AFNetworking (2.0.3). At the time of this commit the three links from Ray's site are not producing data, so only the API button will be displayed without errors.

http://www.raywenderlich.com/downloads/weather_sample/weather.php?format=json
http://www.raywenderlich.com/downloads/weather_sample/weather.php?format=xml
http://www.raywenderlich.com/downloads/weather_sample/weather.php?format=plist

I assume the files will eventually be displayed correctly on Ray's site, at which point this note can be disregarded.