flyerhzm/switch_user — pull request #46 by jamesmoriarty (2013-07-11 00:56:07+00:00)
Title: symbols are cool but procs are better

@lcowell It would be super cool if I could specify a Proc as well as a Symbol for my select label names. e.g.

```ruby
# config/initializers/switch_user.rb
config.available_users_names = { :user => proc { |u| "#{u.role_name} - #{u.email}" } }
```

Is this good to merge?