Open the given url and decode and return the response

        url: The url to open.

def retrieve_request(self, url):
        """Open the given url and decode and return the response

        url: The url to open.

        """
        try:
            data = urlopen(url)
        except:
            print("Error Retrieving Data from Steam")
            sys.exit(2)
        return data.read().decode('utf-8')