Added specs
Merge branch 'master' of github.com:lewagon/promo-2-challenges

Conflicts:
	03-AR-Database/03-Interacting-with-code/lib/queries.rb
	03-AR-Database/03-Interacting-with-code/spec/challenge_spec.rb
Move Gemfile
Moving all gemfiles
Merge branch 'master' of github.com:lewagon/promo-2-challenges
yaml in application config
First HTML readme
01-HTML readme
02-CSS/01-Header
02-CSS/02-Sidebar
02-CSS/03-Fixed-Navbar
rename folders to lib to be consistent with kitt display system
test challenge template
Tell them about serve
Merge branch 'master' of github.com:lewagon/promo-2-challenges
format fixes
Merge branch 'master' of github.com:lewagon/promo-2-challenges
2 last exercises of CSS module
2nd exercise of bootstrap
Merge