public async Task Create_A_Subscribe_To_List()
{
// arrange
session.Returns(await Json.FromFile("data\\lists\\subscribetolistresponse.txt"));
session.ExpectPost("https://api.twitter.com/1.1/lists/subscribers/create.json");
var subs = await session.SubscribeToUsersList(23,"slug here");
Assert.IsNotNull(subs);
subs.Id.ShouldBeEquivalentTo(574);
subs.User.Name.ShouldBeEquivalentTo("Twitter");
}