recurly/recurly-client-ruby — pull request #95 by kbackowski (2013-03-25 16:17:14+00:00)
Title: Fixed exception when assigned empty value to verification_value

This fixes following issue :

```ruby
Recurly::Account.create billing_info: { verification_value: '' }
# => NoMethodError: undefined method `gsub' for 0:Fixnum
```

Added also a test case for this.