anibalcucco/basecamp-wrapper — pull request #30 by anibalcucco (2014-11-25 19:26:42+00:00)
Title: Access project from todo_list

This PR is to be able to access project and project_id from todo list:

```ruby
> Basecamp::TodoList.find(list_id).project_id
=> 1234
> Basecamp::TodoList.find(list_id).project
=> #