message: fix lint warnings in Button.js
diff: @@ -24,13 +24,14 @@ function Button({tag: Tag = 'button', children, size, block, linkStyle, grouped,
  Button.propTypes = {
  block: PropTypes.bool,
  + children: PropTypes.node,
  + disabled: PropTypes.bool,
  grouped: PropTypes.bool,
  + linkStyle: PropTypes.bool,
  + onClick: PropTypes.func,
  scheme: PropTypes.string,
  size: PropTypes.oneOf(['sm', 'large']),
  - tag: PropTypes.oneOf(['button', 'a', 'summary']),
  - linkStyle: PropTypes.bool,
  - disabled: PropTypes.bool,
  - onClick: PropTypes.func
  + tag: PropTypes.oneOf(['button', 'a', 'summary'])
  }
  export default Button
  