Get Source Code

Create new blank directory under the document root directory of Your project.

Just cm or catmice or assets might be very reasonable directory name. Be creative.

Click somewhere on source code area right underneath this very, whole list of instructions.

Once clicked (focused), select all content ctrl + a than ctrl + c to copy to clipboard.

From within Your favorite PHP editor, create new UTF-8, blank file.

Paste clipboard contents ctrl + v (or from within context menu) inside that file.

Save file as index.php under predetermined directory (eg: catmice or assets or however You called it).

OR! .. go to github and get the code from there: Public Stable version and save as is proposed in previous steps.