I don't use checkbox but I use the bootstrap slider like this:
assets.yml
assetic:
debug: "%kernel.debug%"
use_controller: false
bundles: [ AppBundle ]
filters:
cssrewrite: ~
scssphp:
formatter: 'Leafo\ScssPhp\Formatter\Compressed'
jsqueeze: ~
assets:
bootstrap_js:
inputs:
- "%kernel.root_dir%/../vendor/twitter/bootstrap/dist/js/bootstrap.js"
filters: [ jsqueeze ]
jquery:
inputs:
- "%kernel.root_dir%/../vendor/components/jquery/jquery.js"
filters: [ jsqueeze ]
slider_js:
inputs:
- "%kernel.root_dir%/../vendor/seiyria/bootstrap-slider/dist/bootstrap-slider.min.js"
filters: [ jsqueeze ]
slider_css:
inputs:
- "%kernel.root_dir%/../vendor/seiyria/bootstrap-slider/css/bootstrap-slider.css"
filters: [cssrewrite, scssphp]
and then in my twig files:
{% javascripts '@jquery' '@bootstrap_js' '@slider_js' %}
<script type="text/javascript" src="{{ asset_url }}"></script>
{% endjavascripts %}
I'm sure you can use the same approach in your usecase
%kernel.root_dir%/../vendor/vsn4ik/bootsrap-checkbox/js/bootstrap-checkbox.js