Gitcamp
Gitcamp is a handy command line tool for syncing GitHub issues & milestones with Basecamp todo lists, and visa-versa.
Requirements
You'll need to have Rubygems installed. If you're on a Mac then you've probably already got it.
Run
$ gem -v
to check. If not, you'll need to install it.
Installation
$ gem install gitcamp
Usage
Creating a todo list in Basecamp
$ gitcamp todolist