Fix favicon display for rails

Author: cliftondavies

favicon.ico app/assets/images/favicon.ico

@@ -19,7 +19,7 @@
     <meta property="og:url" content="https://learnar.herokuapp.com/">
     <meta name="twitter:card" content="summary_large_image">
 
-    <link rel="shortcut icon" type="image/x-icon" href="favicon.ico">
+    <link rel="shortcut icon" type="image/x-icon" href=<%= asset_path 'favicon.ico' %>>
 
     <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload' %>
     <%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>