recurly/recurly-client-ruby — pull request #73 by JustinCampbell (2012-07-12 15:47:39+00:00)
Title: Make transaction_error.error_code available

This makes the error_code available publicly.

```xml

fraud_security_code
...
```

Currently the only way to retrieve this is using private methods:

```rb
error.send(:xml).text '//error_code'
```

I wasn't sure on the method name of `Error#transaction_error_code`. `#error_code` is already taken, but IMO that should probably be called `#http_status_code` or something similar.