add this export to fix windowing system (#44)

Author: johrstrom

template/script.sh.erb

@@ -17,6 +17,8 @@ cd "${HOME}"
   export XDG_CONFIG_HOME="<%= session.staged_root.join("config") %>"
   export XDG_DATA_HOME="<%= session.staged_root.join("share") %>"
   export XDG_CACHE_HOME="$(mktemp -d)"
+  export $(dbus-launch)
+
   xfwm4 --compositor=off --daemon --sm-client-disable
   xsetroot -solid "#D3D3D3"
   xfsettingsd --sm-client-disable