Fix validation link
Merge branch 'master' of github.com:lewagon/promo-4-challenges
Better rake
Merge branch 'master' of github.com:lewagon/promo-4-challenges
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Merge branch 'master' of github.com:lewagon/promo-4-challenges
ok