rds/preferences — pull request #1 by hoverlover (2012-04-03 15:27:44+00:00)
Title: Fix undefined method error for class_inheritable_hash method in Rails 3.2

Fixes this:

```
/Users/cboyd/.rbenv/versions/1.9.3-p0-perf/lib/ruby/gems/1.9.1/gems/activerecord-3.2.2/lib/active_record/dynamic_matchers.rb:50:in `method_missing': undefined method `class_inheritable_hash' for # (NoMethodError)
from /Users/cboyd/.rbenv/versions/1.9.3-p0-perf/lib/ruby/gems/1.9.1/gems/preferences-0.4.2/lib/preferences.rb:155:in `preference'
from /Users/cboyd/Dropbox/code/merry-maids-admin/app/models/user.rb:8:in `'
```