cjbottaro/schizo — pull request #8 by andriytyurnikov (2013-06-30 04:03:25+00:00)
Title: multiple roles, in order of apearance

Old way - unnecessary nesting
```ruby
user.as(AuthSubject) do |auth_user|
auth_user.as(PasswordResetter) do |reset_user|
return reset_user.password_reset_token_valid?
end
end
```

New way - just list all roles
```ruby
user.as(AuthSubject, PasswordResetter).password_reset_token_valid?
```