PropTypes is wrongly imported

Proptypes is imported from React in the original source code. But it should be imported from a separate package called 'prop-types'

[asciifaceman]

yeah literally non usable now without modification

[goshacmd]

Either of you guys is more than welcome to send a PR addressing that :)

[asciifaceman]

I didn't see the existing ones attended to or any changes in a year so figured the project was dead

[asciifaceman]

@Roman2710 this should be fixed.