There are a few branches here. One for Rspec, one for TestUnit, one for TestSpec, and one for Riot. They're the same, save for testing framework. Each is on a branch:
$ git branch
* master
riot
rspec
test-spec
test-unitI just created a single file called game_of_life.rb that has the
Runner class at the top and then the tests below it. To use this
starting point, just clone the repo, checkout the branch you want to
work on, run bundle install if necessary, and hack away.