//cdn.opalrb.com/opal/<VERSION>/opal.js //cdn.opalrb.com/opal/<VERSION>/opal.min.js //cdn.opalrb.com/opal/<VERSION>/opal.min.js.gz
Where <VERSION> is the desired version number or current.
<VERSION>
current
See http://opalrb.com.