Configure the Recurly gem at initialization time
user
```ruby
config = YAML.load(IO.read(Rails.root.join('config', 'settings.yml')))

Recurly.api_key          = config['recurly']['api_key']
Recurly.js.private_key   = config['recurly']['js_private_key']
Recurly.subdomain        = config['recurly']['subdomain']```
assistant