've learned so far, components also
support being used in <strong>block form</strong>. In block form, components can be
passed a Handlebars template that is rendered inside the component's
template wherever the <code>{{yield}}</code> expression appears.</p>
<p>To use the block form, add a <code>#</code> character to the
beginning of the component name, then make sure to add a closing tag.
(See the Handlebars documentation on <a href="http://handlebarsjs.com/#block-expressions">block expressions</a> for more