invitations example response data

After performing these operations in production I noticed that the example responses are wrong.

- [ ] PR

Actual responses:

```
{"create_individual_page_invitation":{"id":61,"email":"michaeld@everydayhero.com.au","accepted_at":null,"cancelled_at":null}}
```

```
{"join_team_invitation":{"id":62,"email":"michaeld@everydayhero.com.au","accepted_at":null,"cancelled_at":null,"team_page_id":929,"token":"3ac393d8f850b02dd14bf313bafc45a5445605a9"}}
```

=========

![everydayhero_api__invitations-4](https://f.cloud.github.com/assets/486512/1628305/9f298c2c-570b-11e3-84d6-891a944911db.jpg)

![everydayhero_api__invitations-5](https://f.cloud.github.com/assets/486512/1628308/b844cf1e-570b-11e3-963e-98e7d7298f82.jpg)