[#53420683] Updates the "donations" guide on the knowledge base.

![1](https://f.cloud.github.com/assets/2251119/1625828/01dc707a-56d8-11e3-9a0a-bc5e5cc8a721.png)


![2](https://f.cloud.github.com/assets/2251119/1625829/01e69898-56d8-11e3-92ae-3a39d6e29e83.png)


![3](https://f.cloud.github.com/assets/2251119/1625830/01f07d18-56d8-11e3-968e-1d9dd34c1ffa.png)


![4](https://f.cloud.github.com/assets/2251119/1625831/01f615b6-56d8-11e3-9760-157340863359.png)