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.

- [ ] @HelenRoss approval
- [ ] PR

![screen_shot_2013-12-11_at_11 25 01-9](https://f.cloud.github.com/assets/486512/1720492/75325658-6203-11e3-9f1d-6733aec959d0.jpg)