thoughtbot/bourbon — pull request #148 by galulex (2012-12-09 16:53:29+00:00)
Title: Add @arrow mixin for addons

A simple arrow mixin
-
```scss
.pupup:after {
@include arrow(bottom, 30px, 30px, 30px, gray);
left: -30px;
top: 6px;
}
```

![popup3.png](https://f.cloud.github.com/assets/483482/2460/e0be9102-421f-11e2-8013-1345bac00d6f.png)

```scss
.pupup:before {
@include arrow(bottom, 30px, 30px, 30px, red);
left: -30px;
top: 6px;
}

.pupup:after {
@include arrow(bottom, 30px, 30px, 30px, white);
left: -30px;
top: 6px;
}
```

![popup2.png](https://f.cloud.github.com/assets/483482/2458/3ee99dd6-421f-11e2-8e52-73bf3423f4fd.png)