Should handle interpolated ruby code properly

This is how it looked before

![skarmavbild 2014-04-23 kl 23 32 25](https://cloud.githubusercontent.com/assets/220827/2783640/e707165c-cb2f-11e3-9796-5af708f28e5e.png)

This is how it looks after the patch is applied

![skarmavbild 2014-04-23 kl 23 37 28](https://cloud.githubusercontent.com/assets/220827/2783644/f04b1e84-cb2f-11e3-9de9-b165f5718e3b.png)
 
It now behaves in the same way Sublime does.