title: Appcelerator Requesting and using Json file
body: <p>I'm learning how to use a third party API called Wunderground and I don't know how to request, receive, and use their results which is in a Json format.
  If you see their website a developer can sign up for free and receives an API KEY. You can then request weather data in the following URL format.. http://api.wunderground.com/api/KEY/FEATURE/[FEATURE…]/[SETTING…]/q/QUERY.FORMAT
  So I have tried it in my web browser by typing some parameters and I received a very long Json file with the correct information (I checked). Problem is I don't have the slightest idea of how to create a variable which can make this request, and even if I was able to do that I don't know where should I receive the file and how to get only the results I want (in this case current weather).</p>