Makes spotify more friendly to window managers by settings a class name before opening the window. This allows WMs like i3 to correctly discover the window and fit it into a prepared layout.
Inspired by steamwm.
$ make
LD_PRELOAD=/path/to/spotifywm.so /path/to/spotify/binary
Under Arch Linux, do not run the wrapper script in /usr/bin, it will override LD_PRELOAD.
Use /usr/share/spotify/spotify instead.