title: PDFKit doesn't display custom font
body: <p>I am trying to use a custom font in a pdf I generate from html with PDFKit in my Rails app. I added the font in ...app/assets/fonts/ and included it in my html template:</p>
  
  <pre><code>css:
    @font-face {
      font-family: 'journal';
      src: url(file://#{Rails.root.join('app', 'assets', 'fonts', 'journal.eot')});
      src: url(file://#{Rails.root.join('app', 'assets', 'fonts', 'journal.woff')} format("woff")),
           url(file://#{Rails.root.join('app', 'assets', 'fonts', 'journal.ttf')}) format("truetype");
    }
  </code></pre>
  
  <p>called it in the css:</p>
  
  <pre><code>h1 {font-family: journal; }
  </code></pre>