code: function wget(fileURL, callback) {
  		var
  			chunks = [],
  			isHTTPS = fileURL.indexOf('https') === 0,
  			client = isHTTPS ? https : http,
  			options = fileURL
  		;
  		if (isHTTPS) {
  			options = url.parse(fileURL);
  			options.rejectUnauthorized = false;
  			options.agent = new https.Agent(options);
  		}
  		client.get(options, function (res) {
  			res.on('data', function (chunk) {
  				chunks.push(chunk);
  			}).on('end', function () {
  				callback(null, joinBuffers(chunks));
  			});
  		});
  	}
docs: Given a web URL, fetch the file contents.