<nav-item>
Renders a single item in a <navigation>.
<nav-item> is basically an <a> tag wrapped in an <li> tag. The attributes for <a> may all be used on this tag, and work the same way.
Example 1: explicit links. Note that we’re using explicit routes for clarity. Named routes are better.
<navigation current="home">
<nav-item href="/">Home</nav-item>
<nav-item href="/logout">Logout</nav-item>
</navigation>
Example 2: navigation based on a collection of items. Each item will be transformed into a link as described in <a>.
<navigation with="&links">
<repeat>
<nav-item/>
</repeat>
</navigation>