Update index.html

Add footer

Author: fromonda

Wireframe/index.html

@@ -55,7 +55,8 @@ <h2>What is a Git Branch?</h2>
     </main>
     <footer>
       <p>
-        This is the default, provided code and no changes have been made yet.
+        Built using semantic HTML, CSS layout techniques, and version control
+        practices.
       </p>
     </footer>
   </body>