Update README.md
Added pictures for Rails#1 challenges
Fix enonce
Prepare for second exercise in CRUD day
Wikinimous challenge
Fix readme
fix sequel find by id
Merge pull request #21 from lewagon/fix-wagon-race-api

fix sequel find by id
Fix typos
Fix exercise
Do not talk about Procfile
Merge branch 'master' of github.com:lewagon/promo-4-challenges

Conflicts:
	05-Rails/01-Rails-intro/01-Stupid-coaching/README.md