now you can config the plugin using data attrs

Yo can use the data attribute to set the options in the plugin, example;

```html

<select data-menu-class="mytestclass">
  <option value="ar" data-domain="http://www.turismocity.com.ar/"> Argentina</option>
  <option>Chile</option>
</select>

<script>
$(function(){
  $('select').customSelectMenu();
})
</script>
```