Support "opens" option

[edinella]

opens: (string: 'left'/'right') Whether the picker appears aligned to the left or to the right of the HTML element it's attached to

See https://github.com/dangrossman/bootstrap-daterangepicker

[edinella]

at line 22

      if($attributes.opens) {
        options.opens = $attributes.opens;
      }

[D-system]

This issue can be close. It has been added with le PR#16

[luisfarzati]

Yeap. Thanks :)