Include Ionic Dark Theme
<p>I know Ionic 2 ships with a dark theme (the <code>ionic-angular</code> node module ships with the file <code>css/ionic.dark.css</code>).</p>

<p>How do I import it in my Ionic application's SASS?</p>

<p>I've tried to <code>@import ionic-angular/css/ionic.dark.css</code> in both <code>src/app/app.scss</code> and <code>src/theme/components.scss</code> but the output is visually the same as the starter theme.</p>

<hr>

<p><strong>Edit</strong> to add my <code>ionic info</code>:</p>

<pre><code>Cordova CLI: 6.2.0
Ionic CLI Version: 2.1.4
Ionic App Lib Version: 2.1.2
OS: Distributor ID: Ubuntu Description: Ubuntu 16.04.1 LTS 
Node Version: v6.9.1
</code></pre>