pidof bspswallow always exits with 1, even if bspswallow is running

[terriblemoment0836x]

Hi,
In my machine
pidof bspswallow
always exits with 1 even if bspswallow in running (I linked the binary to /usr/local/bin/ btw), and that causes bspswallow to run multiple time as I restart the window manager.
As I can tell the cause of that is the bspswallow script is running as a argument to /bin/sh and not standalone.
So changing:
pidof bspswallow || bspswallow &
with: (ps x | grep bspswallow | grep -v grep) || bspswallow &
solved the issue for me.

[JopStro]

Good find, that just started happening for me too when testing, will update the readme.