bunch of changes
updated version challenge 6
mejora versiona
new modifications
new modifications
Merge branch 'master' of github.com:lewagon/promo-2-challenges
Reformat exercise 03-02
accept change in readme ex 2
rewording ex3
switching mvc and AR validations
first version validation challenge
Update README.md
Update README.md
renaming challenges
finishing challenge on validations
last challenge
adding readme for DB
adding readme for DB
changing repo name
changing repo name