prettier separator

make it not dashed, dimmed and wider


### Before

![screen shot 2014-08-15 at 21 29 08](https://cloud.githubusercontent.com/assets/170270/3937837/82302cd2-24b2-11e4-8c56-437288235158.png)

### After

![screen shot 2014-08-15 at 21 27 48](https://cloud.githubusercontent.com/assets/170270/3937839/871220f2-24b2-11e4-95fc-21b5dca51b49.png)