wildbit/postmark-gem — pull request #40 by sbounmy (2014-04-16 09:49:01+00:00)
Title: fix update server info verb

Hi,

When trying to update server info it fails :

```ruby
Postmark::ApiClient.new(my_api_key).update_server_info inbound_domain: 'my.domain.com'
Postmark::UnknownError: #
```

Postmark changed their API from POST to PUT HTTP verb.