Documenter la création d'une instance

1. ./create-instance.sh toto
2. copy the configure password url
3. go to /opt/atrium
4. ./generate-cozy-subdomains.sh toto & copy the result
5. go to atrium & edit "Cozy" app
6. append the subdomains results
7. Wait for a reboot
8. Go to the url & define your password