gnome-bluetile-session - Invoke gnome-session with Bluetile as window
       manager
       gnome-bluetile-session
       Invokes gnome-session after setting the environment variable
       WINDOW_MANAGER to the path of the Bluetile binary. This will start up
       the GNOME desktop environment with Bluetile as the window manager.
       Jan Vornberger <jan.vornberger@informatik.uni-oldenburg.de>