private static GoogleOAuth2AuthenticationOptions GetGoogleOptions()
        {
            var reader  = new KeyReader();
            var keys    = reader.GetKey("google");
            var options = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId     = keys.Public,
                ClientSecret = keys.Private
            };

            return(options);
        }
        private static FacebookAuthenticationOptions GetFacebookOptions()
        {
            var reader  = new KeyReader();
            var keys    = reader.GetKey("facebook");
            var options = new FacebookAuthenticationOptions()
            {
                AppId     = keys.Public,
                AppSecret = keys.Private
            };

            options.Scope.Add("email");
            return(options);
        }