FR: Add service as div class

[mikestopcontinues]

Hey, I'm trying to make my oembeds responsive, but it's a bit of a pain given the variety of configs used across services. It would be great if div.remark-oembed-inline included a service class (e.g. oembed-youtube). It would go a long way toward handling the quirks of the common services. What do you think?

[sergioramos]

thanks for the suggestion @mikestopcontinues

[mikestopcontinues]

Thank you!