This custom library can be used to download two .txt documents and display them as an alert that can take the user to a URL. The first .txt document contains the text you want to display in the UIAlertView, and the second contains the URL. It uses NSUserDefaults to make sure the alert is only shown once, not over and over. For example, if you have NotificationReceiver run on the app's launch, it'll display the alert and won't show it again until it sees that there is a different alert at the specified URL.