voormedia/rails-erd — pull request #36 by a2ikm (2012-09-06 08:22:40+00:00)
Title: Load user-wide setting file ~/.erdconfig

It overrides default options.
But execution-specific options (like `rake erd attributes=content`) override it.

~/.erdconfig is a YAML file like below.

```YAML
:attributes:
- :content
- :foreign_key
- :inheritance
```