Any ember-mobiledoc-editor examples?

I’m struggling to make anything useful with the ember mobiledoc addon. For example I’m not really sure how to create custom cards, or how to add a toolbar button to add a card to a post. Are there any good examples out there?

So after playing with it today I’ve made a lot of progress and am able to get custom cards added. I was also linked to this example: mobiledoc-kit/demo at 0271871d87b0a52ca102f1c3cdf41b93bedd1de2 · bustle/mobiledoc-kit · GitHub