Multiselects on mobile are broken

[Robdel12]

Version of Dropkick:

2.x

Expected Behavior

Dropkick should mimic what mobile devices do. It looks like all of them use a select style dropdown but open a native selector menu.

Actual Behavior

You can't select more than one option when mobile: true is set.

Steps To Reproduce:

1. Set Dropkick to mobile: true and multiple="true"
2. Load on a mobile device
3. Try to select more than one option

JSBin / Example repo / Failing test:

Here is a codepen template for reproducing bugs: http://codepen.io/robdel12/pen/pyZYzM

Checkout dropkickjs.com on a mobile device.