public ActionResult Tweet()
        {
            var sendTweetVM = new SendTweetViewModel
            {
                Text = "Testing async LINQ to Twitter in MVC - " + DateTime.Now.ToString()
            };

            return View(sendTweetVM);
        }
        public async Task<ActionResult> TweetAsync(SendTweetViewModel tweet)
        {
            var auth = new MvcAuthorizer
            {
                CredentialStore = new SessionStateCredentialStore()
            };

            var ctx = new TwitterContext(auth);

            Status responseTweet = await ctx.TweetAsync(tweet.Text);

            var responseTweetVM = new SendTweetViewModel
            {
                Text = "Testing async LINQ to Twitter in MVC - " + DateTime.Now.ToString(),
                Response = "Tweet successful! Response from Twitter: " + responseTweet.Text
            };

            return View(responseTweetVM);
        }