boxen/puppet-boxen — pull request #55 by fromonesrc (2013-06-29 16:49:01+00:00)
Title: Use PKG_SOURCE_TYPES to avoid collision

Saw this warning on puppet-boxen 2.3.5:

```
/opt/boxen/repo/shared/boxen/lib/puppet/provider/package/compressed_pkg.rb:8:
warning: already initialized constant SOURCE_TYPES
```

Suggestion to change variable to PKG_SOURCE_TYPES.