Users can create pickups for a charity availability

https://trello.com/c/dyH2YTAp/5-as-a-user-i-can-schedule-a-pickup

![user_create_pickup](https://cloud.githubusercontent.com/assets/8646429/5109777/9a9ab10a-6fe1-11e4-9816-e4b869773747.gif)

You can clean up these migrations so you only have the ones you actually wanted, rather than ones that create fields, then others that later take them away. This is why we branch!