Add Sideloading Help Video to Project README

The video is outdated, but it works. Files UWP is obviously on GitHub now.

Author: lukeblevins

README.md

@@ -1,7 +1,7 @@
-<h1>Files for Windows 10</h1>
-<h3>Meet Files, a brand-new File Manager for Windows 10.</h3>
+<h1>Files UWP</h1>
+<h3>Meet Files, a brand-new file manager for Windows 10.</h3>
 <img src="Assets/FilesHome.PNG" width="800px">
 <img src="Assets/FilesDrive.PNG" width="800px">
 <p>Created from the ground up to look and feel amazing, Files is built to replace the outdated Windows File Explorer.</p>
-
+<a href="https://youtu.be/1wSA8PYKhpA?t=124">Link to old sideloading help video</a>