Sheep CLI options parsed as files

[MichaelMcDonnell]

The README says to run the CLI like this:

sheep pack --options max_width=1024 max_height=1024 sprites/*.png

I tried it and it did not work. Adding the options after works:

sheep pack sprites/*.png --options max_width=1024 max_height=1024

I think the options might get interpreted as files?