title: Number pipes in Angular2 not working as I would expect
body: <pre><code>platform-browser.umd.js:962 ORIGINAL EXCEPTION: 2 is not a valid digit info for number pipes
  </code></pre>
  
  <p>Is what I get from writing this in my template:</p>
  
  <pre><code>&lt;li&gt;Percentage satisfied: {{selectedCountry.averageSatisfaction | number:2}}&lt;/li&gt;
  </code></pre>
  
  <p>My intention is to produce a decimal number with only two decimals. Can someone please point out what I am doing wrong? Here is the documentation: <a href="https://docs.angularjs.org/api/ng/filter/number" rel="noreferrer">https://docs.angularjs.org/api/ng/filter/number</a></p>