Draft from pair session
```

1. 1. 1. REST Sender
         The rest sender uses a restful endpoint at /rest/sender that consumes and produces json, is protected by HTTP Basic authentication, and returns a 202 status when the message is accepted and a 401 when there is an authentication error.

1. 1. 1. 1. Authentication
            Mention pushApplicationId and master secret

1. 1. 1. 1. Data format
            We use json formatted instances of `org.jboss.aerogear.unifiedpush.message.UnifiedPushMessage`

TODO describe values

1. 1. 1. 1. responses
            TODO describe 202
            TODO describe 401
            ```