root/pypi: links for bootable-usb

root/pypi bootable-usb-0.4.tar.gz
root/pypi bootable-usb-0.3.1.tar.gz
root/pypi bootable-usb-0.3.tar.gz
root/pypi bootable-usb-0.2.tar.gz
root/pypi bootable-usb-0.1.tar.gz