Update documentation on DATABASE to mention ceres.
Update documentation on DATABASE to mention ceres.

graphite-project/carbon,iain-buclaw-sociomantic/carbon,graphite-project/carbon,criteo-forks/carbon,piotr1212/carbon,obfuscurity/carbon,iain-buclaw-sociomantic/carbon,criteo-forks/carbon,krux/carbon,deniszh/carbon,piotr1212/carbon,obfuscurity/carbon,krux/carbon,johnseekins/carbon,deniszh/carbon,johnseekins/carbon