thoughtbot/formulaic — pull request #29 by seanpdoyle (2014-06-20 16:44:11+00:00)
Title: `fill_form` looks up `placeholder` first

```ruby
fill_form :foo, { foo_field: 'bar' }
```

Will now first lookup the `I18n` for `simple_form.placeholders.foo.foo_field`,
then`simple_form.labels.foo.foo_field`, then fallback to the default process.