public LinqtoTwitter(string pathToAccessCredentialXml)
        {
            var accessCredentials = new AccessCredentials(pathToAccessCredentialXml);
            var authorization     = LinqToTwitterAuthorizer.DoSingleUserAuth(accessCredentials);

            _twitterContext = new TwitterContext(authorization);
            //Console.WriteLine("Rate Limit Remaining: {0}", _twitterContext.ResponseHeaders["X-FeatureRateLimit-Remaining"]);
        }
        public LinqtoTwitter(IAccessCredentials accessCredentials)
        {
            var authorization = LinqToTwitterAuthorizer.DoSingleUserAuth(accessCredentials);

            _twitterContext = new TwitterContext(authorization);
        }