fix(user): remove root properties and can* methods
Merge branch 'master' into acl
chore(test): remove example directory
chore(package): bump to v0.3.3
feat(groups): world group schema
Merge branch 'master' into acl
chore(package): bump to 0.3.4
fix(package.json): remove duplicated dependency
chore(core/groups): jshint fixes