message: Fix button props
diff: import { storiesOf } from '@storybook/react';
  -import React from "react";
  -import Button from "../components/button";
  +import React from 'react';
  +import Button from '../components/button';
  -const stories = storiesOf("Button", module);
  +const stories = storiesOf('Button', module);
  -stories.add("Primary", () => (
  +stories.add('Primary', () => (
  <Button
  - primary
  + variant='primary'
  >
  Primary
  </Button>
  ));
  -stories.add("Secondary", () => (
  +stories.add('Secondary', () => (
  <Button
  - secondary
  + variant='secondary'
  >
  Secondary
  </Button>
  ));
  -stories.add("Disabled", () => (
  +stories.add('Disabled', () => (
  <Button
  disabled
  >
  