iconset: {} not working with fontawesome
I initialize the iconpicker like this in JS:

``` javascript
$('#iconPick').iconpicker({
                    search: false,
                    cols: 6,
                    rows: 1,
                    icon: 'fa-folder',
                    iconset: { iconClass: 'glyphicon', iconClassFix: 'glyphicon-', icons: [ 'play', 'pause' ] },
                    //iconset: { iconClass: 'fontawesome', iconClassFix: 'fa-', icons: [ 'folder', 'book' ] },
                    placement: 'bottom',
                    selectedClass: 'btn-success',
                    unselectedClass: ''
                });
```

If I comment the glyphicon/iconset part out and then include the fontawesome/iconset part the icons do not show in the picker popup.

Am I doing something wrong?
