def create_todo(todo)
      post_params = {
        :body => todo.post_json,
        :headers => Logan::Client.headers.merge({'Content-Type' => 'application/json'})
      }

      response = Logan::Client.post "/projects/#{@project_id}/todolists/#{@id}/todos.json", post_params
      Logan::Todo.new response
    end
def create_todo(todo)
      post_params = {
        :body => todo.post_json,
        :headers => Logan::Client.headers.merge({'Content-Type' => 'application/json'})
      }

      response = Logan::Client.post "/projects/#{@project_id}/todolists/#{@id}/todos.json", post_params
      Logan::Todo.new response
    end
create a todo in this todo list via the Basecamp API

 @param [Logan::Todo] todo the todo instance to create in this todo lost
 @return [Logan::Todo] the created todo returned from the Basecamp API