Added 404 page

Author: Johan Van den Rym

404.html

@@ -0,0 +1,9 @@
+---
+layout: default
+title: "404: Page not found"
+---
+
+<div class="page">
+  <h1 class="page-title">404: Page not found</h1>
+  <p class="lead">Sorry, we've misplaced that URL or it's pointing to something that doesn't exist. <a href="/">Head back home</a> to try finding it again.</p>
+</div>