Add bell sound
Add images
Rehost images elsewhere
Remove unused method
Tweak variable names
Rename hasAchievement to hasntAchievement (yup)
Move building schemas methods to achievements.js
Work on cleaning achievement assertions
Add basic tests setup
Tweak code organization
Tweak tests
Add Travis file
Abstract some test cases and add centennial test
Remove Node 0.11 builds
Add travis status to README
Add Base 10 tests
Cache node_modules folder for testing
Add original Colorblind version
Work on colour-blind mode