addClass on Selectable adds class only to the ul

Hi Mathieu,

When you deal with a single-option selectables and want to alter the whole thing, it will be simpler if you refer to the object.container property. I could re-tunnel all the dom methods to that property, but it might get confusing and ambiguous, because selectables handle both multiple and single-option cases and it makes sense when the actual object represents the list of options.

Try it like that

var selectable = new Selectable({mutliple:false});

selectable.container.addClass('trololo');

Btw, do you know that all UI widgets have their own classes? You could alter them directly in your css without adding any new ones.

I know I can modify the rui-selectable-container class.
But my actual goal is to position two different selectables using two distinct css classes.
At the moment I had just wrapped them in a div to which I added the positioning class.

I'll add it to the container now that I know.