Hi, Can You Add How to use this? Would love to use this for myself and the fact that it has comments is so great. But No Readme File Of how to use it. I know This is Probably For something you are doing But if You Would add A readme File with Info on how to use that would be nice.
Currently users can only type in numbers, but if they paste into the input field from somewhere else (e.g. 1111-2222-3333-4444) the 'valid' function doesn't work.
We should either strip the invalid characters on paste (-, e, and +), or get the validation to work even when those characters are entered.