Sketch donation user experience

![basicuserexperience](https://cloud.githubusercontent.com/assets/8646429/5287030/11412d0a-7af7-11e4-9b3d-a477ec6e3df7.gif)

![image](https://cloud.githubusercontent.com/assets/8646429/5288742/a6217f98-7b05-11e4-8cab-cf77c175f59f.png)