rails/rails — pull request #15952 by user-tony (2014-06-28 03:02:14+00:00)
Title: modular migrate file

### That Rails is modular, it is recommended migrate also add modules.

#### Example
```
$ rails g model Core::User name:string
invoke active_record
create app/models/core/user.rb
create app/models/core.rb
create db/migrate/core/user/20140324105328_create_core_users.rb
```