Use columnify for pretty output.

#### Old
![image](https://cloud.githubusercontent.com/assets/43438/4901282/22226928-6430-11e4-9d35-dadff0b7ab53.png)

#### New
![image](https://cloud.githubusercontent.com/assets/43438/4901259/fc2801ba-642f-11e4-9613-4e46d29195ca.png)