prawnpdf/prawn — pull request #374 by kennethkalmer (2012-07-23 10:09:10+00:00)
Title: Paths to font files should accept Pathname objects too...

Found this bug while using 0.12.0 in a Rails app with:

```ruby
font_families.update( "Foo" =>
:normal => Rails.root.join("app/assets/fonts/foo.ttf")
)
```

This lead to unexplainable `app/assets/fonts/foo.ttf is not a known font. (Prawn::Errors::UnknownFont)` exceptions. All the tests pass with this tiny change.