[+] bump v4.0.1

[+] bump v4.0.0: migrating to React v16.x

[+] bump v3.0.0: migrating to React v15.5.0, 👍 @Fer0x

[*] change React pure function component template to function declara…

…tion, add `rpfcaf` for arrow function component

[+] add React pure function component template, resolves #5 (@Nek)

fixes static `defaultProps` template

add import react-dom template; add trailing comma to PropTypes

enable reformat according to code style, resolves #3

fixes dangerouslySetInnerHTML template

add Transition add-on prop templates