Add favicon

Author: beschoenen

source/images/favicon.png

@@ -30,6 +30,7 @@ under the License.
     <meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible">
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
     <title><%= current_page.data.title || "API Documentation" %></title>
+    <%= favicon_tag 'images/favicon.png' %>
 
     <style>
       <%= Rouge::Themes::MonokaiSublime.render(:scope => '.highlight') %>