updated charity examples

Updated the charity endpoint to use real campaign and charity ids ... as well as the correct response data that would be returned for that call.

- [x] @HelenRoss approval
- [ ] PR

![screen_shot_2013-12-11_at_12 59 44-3](https://f.cloud.github.com/assets/486512/1720891/850325a0-6210-11e3-8309-4390aca13f71.jpg)