Fix links

_includes/landing-page-buttons

 <div class="landing-page-buttons">
     <div class="landing-page-buttons-main">
-        <a href="{{ web-start-page }}" class="button landing-page-buttons-read-online">Read online</a>
+        <a href="{{ path-to-root-directory }}{{ include.read }}" class="button landing-page-buttons-read-online">Read online</a>
     </div>
     <div class="landing-page-buttons-secondary">
-        <a href="{{ path-to-root-directory }}downloads/{{ title | slugify }}.pdf" class="landing-page-buttons-pdf">PDF</a>
-        <a href="{{ path-to-root-directory }}downloads/{{ title | slugify }}.epub" class="landing-page-buttons-epub">EPUB</a>
-        <a href="{{ include.buy-link }}" class="landing-page-buttons-buy">Buy the book</a>
+        <a href="{{ path-to-root-directory }}{{ include.pdf }}" class="landing-page-buttons-pdf">PDF</a>
+        <a href="{{ path-to-root-directory }}{{ include.epub }}" class="landing-page-buttons-epub">EPUB</a>
+        <a href="{{ include.buy }}" class="landing-page-buttons-buy">Buy the book</a>
     </div>
 </div>

index.md

@@ -11,7 +11,10 @@ style: home
 %}
 
 {% include landing-page-buttons
-   buy-link="https://www.amazon.com/Fifty-Shades-Green-Reimagining-Philanthropy/dp/1694497119"
+   read="book/text/0-4-about.html"
+   pdf="downloads/shades-of-green.pdf"
+   epub="downloads/shades-of-green.epub"
+   buy="https://www.amazon.com/Fifty-Shades-Green-Reimagining-Philanthropy/dp/1694497119"
 %}
 
 The Shuttleworth Foundation funds those who are not only brave enough to reimagine the future, but also brave enough to try. And we challenge ourselves to do the same.