@GeekOnCoffee here should be `@order_hash['number']`, maybe I used a bad name for this method, but it should return the order_number.

we use it here
https://github.com/spree/twilio_endpoint/blob/master/twilio_endpoint.rb#L29

```ruby
    body   = "Hey #{order.customer_name}! Your order #{order.number} has been received."
```