Merge pull request #87 from joshhazelhurst123/master

Create 404 page  #83 pull request

Author: niccokunzmann

404.html

@@ -0,0 +1,8 @@
+---
+layout: default
+title: 404page
+permalink: /404.html
+---
+<h1>Whoops! Could not find that page.</h1>
+<p>Sorry this page has been renamed, please find it in the tutorial =(</p>
+<a href="https://coderdojopotsdam.github.io/regex-tutorial">tutorial link</a>