title: Avoid Vue warn when using custom tags
body: <p>I'm getting an error when I'm trying to use custom tags like this: </p>
  
  <p><code>&lt;material-button&gt;Ok&lt;/material-button&gt;</code></p>
  
  <p>It's not a real component, just semantic HTML with a specific CSS. However, I'm getting this Vuew error:</p>
  
  <pre><code> [Vue warn]: Unknown custom element: &lt;material-button&gt; - did you register the component correctly? For recursive components, make sure to provide the "name" option.
  
  found in
  </code></pre>
  
  <p>Can I avoid this error without having to create and register <code>&lt;material-button&gt;</code> as a component?</p>
  
  <p>Note: everything works perfectly is just that [Vue warn] that pops up in the console all the time.</p>