cap set up

This is OK, but it's just the codes (e.g. 'abr') and/or labels ('Abridger') that will show up in the MARC records, so I'd suggest using YAML (more idiomatic to Ruby, easier to parse to the standard libraries) formatted something like this:

```yaml
---
- :code: 'abr'
  :label: 'Abridger'
- :code: 'act'
  :label: 'Actor'

```