Powerbanks 1.0.1

Changed

• Switched to using technic.pretty_num instead of technic.EU_string for compatibility.
• Small changes to README to improve readability.
• Node now drops empty powerbank instead of nothing if it gets dug (though this should never happen normally).

Fixed

• Duplication bug with nodes that take the wielded itemstack on right-click (such as xdecor item frames).