Add circle.yml to configure CircleCI.
Add more Circle support.
Try to generate coverage badges as well.
Ensures minitest autorun comes after coverage.
Prettier status in readme.
Try to get CircleCI not to include other things in coverage runs.
Try to anticipate future CircleCI simplecov artifacts.
Try coveralls instead.
More coveralls work. Remove simplecov badges.
Why not both?
Shh, gh-pages, shh.
Update build scripts and documentation.