Renames aux.html to auxil.html to remove Windows filesystem naming conflict.

In Windows, "aux.*" named files are reserved keywords:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx.

Right now you cannot clone this repository on a Windows machine, as git fails with a status code of 128. I've renamed the aux.html file to auxil.html to remove this exception.