title: routing in canjs not working as links are not getting an href value
body: <p>I am new to canjs and following the tutorials on canjs site. I am using webpack to create a sample canjs page.</p>
  
  <pre><code>import { Component, stacheRouteHelpers } from "can";
  
  Component.extend({
      tag: "my-app",
      view: `
          &lt;a href="{{ routeUrl(page='home') }}"&gt;Home&lt;/a&gt;
          &lt;a href="{{ routeUrl(page='tasks') }}"&gt;Tasks&lt;/a&gt;
      `,
      ViewModel: {
      }
  });
  </code></pre>
  
  <p>When I see in the page, it's not routing to the home. Infact href value is not coming in output like below.</p>
  
  <pre><code>&lt;a href=""&gt;Home&lt;/a&gt;
  </code></pre>
  
  <p>console shows the following warning</p>
  
  <pre><code>MyAppView:3: Unable to find key "routeUrl()".
  </code></pre>