#1123 Create owners command.

Implement owners command.

![owners command](https://cloud.githubusercontent.com/assets/1271535/3350116/65e9bf9a-f990-11e3-8a6c-cbc339ee028a.png)
![owners help](https://cloud.githubusercontent.com/assets/1271535/3350117/65f04a0e-f990-11e3-9ade-119c2cc2626e.png)