Error while download official ffmpeg version

[SidArtem]

I've got an error (407) Proxy Authentication Required in OfficialFFmpegDownloader -> GetLatestVersionInfo

I tried to fix it with

using (var wc = new WebClient())
{
	IWebProxy proxy = WebRequest.GetSystemWebProxy();
	proxy.Credentials = CredentialCache.DefaultCredentials;
	wc.Proxy = proxy;

	var json = wc.DownloadString("http://ffbinaries.com/api/v1/version/latest");
	return JsonConvert.DeserializeObject<FFbinariesVersionInfo>(json);
}

.. and seems it helps.

Please check this remark and add in master release.