Fixing 03-03-01-Migrations
Fixing 03-03-02-Models
Merge pull request #27 from lewagon/ar-exercices

Exercices ActiveRecord
Merge branch 'master' of github.com:lewagon/promo-3-challenges
Removing the crud.rb containing exercice answers
Fixing AR exercices
Merge branch 'master' of github.com:lewagon/promo-3-challenges
push complet