Add link to DigitalOcean

Author: trollixx

_includes/footer.html

@@ -1,13 +1,21 @@
 <footer class="zd-footer" role="contentinfo">
   <div class="container">
+    <div class="row">
+      <div class="col-xs-12 col-sm-6 col-md-8">
+        <ul class="zd-footer-links">
+          <li><a href="https://github.com/zealdocs/zeal/"><img src="https://img.shields.io/github/stars/zealdocs/zeal.svg?style=social&label=Star"></a></li>
+          <li><a href="https://twitter.com/zealdocs"><img src="https://img.shields.io/twitter/follow/zealdocs.svg?style=social"></a></li>
+        </ul>
 
-    <ul class="zd-footer-links">
-      <li><a href="https://github.com/zealdocs/zeal/"><img src="https://img.shields.io/github/stars/zealdocs/zeal.svg?style=social&label=Star"></a></li>
-      <li><a href="https://twitter.com/zealdocs"><img src="https://img.shields.io/twitter/follow/zealdocs.svg?style=social"></a></li>
-    </ul>
+        <p>&copy; <a href="https://github.com/trollixx">Oleg Shparber</a> and <a href="https://github.com/zealdocs/zeal/graphs/contributors">other contributors</a>, 2013-{{ 'now' | date: "%Y" }}</p>
 
-    <p>&copy; <a href="https://github.com/trollixx">Oleg Shparber</a> and <a href="https://github.com/zealdocs/zeal/graphs/contributors">other contributors</a>, 2013-{{ 'now' | date: "%Y" }}</p>
-
-    <p>Website layout is based on <a href="https://github.com/twbs/bootstrap/tree/master/docs">Bootstrap Docs</a>.</p>
+        <p>Website layout is based on <a href="https://github.com/twbs/bootstrap/tree/master/docs">Bootstrap Docs</a>.</p>
+      </div>
+      <div class="col-xs-12 col-sm-6 col-md-4 zd-footer-sponsors">
+        <a href="https://www.digitalocean.com/">
+          <img src="/static/img/digitalocean.png">
+        </a>
+      </div>
+    </div>
   </div>
 </footer>

_sass/components/footer.scss

@@ -24,6 +24,12 @@
 .zd-footer-links li + li {
   margin-left: 15px;
 }
+.zd-footer-sponsors {
+  text-align: center;
+}
+.zd-footer-sponsors img {
+  height: 30px;
+}
 
 @media (min-width: 768px) {
   .zd-footer {
@@ -32,4 +38,7 @@
   .zd-footer p {
     margin-bottom: 0;
   }
+  .zd-footer-sponsors {
+    text-align: right;
+  }
 }