dpickett/has_barcode — pull request #2 by Reprazent (2012-06-08 08:28:41+00:00)
Title: specifically setting the class name

Since the class EAN13 is in capitals, I needed to set the classname manually. This can now be done like this:
```ruby
has_barcode( :barcode,
:type => :ean_13,
:outputter => :png,
:value => Proc.new { |c| c.padded_number },
:barcode_class_name => "EAN13")
```

When "barcode_class_name" isn't given the fallback "type" is used like before