Segmented controls within .content don't have the 'active' class applied when selected
Well, they do, but then the class is removed, via [lines 55-59](https://github.com/twbs/ratchet/blob/master/js/segmented-controllers.js#L55-L59):

``` javascript
activeBodies = targetBody.parentNode.querySelectorAll(classSelector);

for (var i = 0; i < activeBodies.length; i++) {
    activeBodies[i].classList.remove(className);
}
```

`targetBody.parentNode` in this case is the wrapper `div`, i.e. `.content`, and if the segmented controls are in that same `div`, then the active class is removed from them as well (undesirably).

Should we scope that query to active `.control-content`?

``` javascript
activeBodies = targetBody.parentNode.querySelectorAll('.control-content' + classSelector);
```
