message: Adds ButtonGroup story
diff: @@ -11,6 +11,7 @@ import TypeSpecimen from 'react/stories/components/TypeSpecimen';
  import ModalDialog from 'react/components/UI/ModalDialog';
  import GenericButton from 'react/components/UI/GenericButton';
  import GenericInput from 'react/components/UI/GenericInput';
  +import ButtonGroup from 'react/components/UI/ButtonGroup';
  storiesOf('UI', module)
  .add('ModalDialog', () => (
  @@ -44,6 +45,24 @@ storiesOf('UI', module)
  </div>
  ))
  + .add('ButtonGroup', () => (
  + <div>
  + <ButtonGroup>
  + <GenericButton>Option 1</GenericButton>
  + <GenericButton>Option 2</GenericButton>
  + <GenericButton>Option 3</GenericButton>
  + <GenericButton>Option 4</GenericButton>
  + </ButtonGroup>
  +
  + <ButtonGroup>
  + <GenericButton size="xs">Option 1</GenericButton>
  + <GenericButton size="xs">Option 2</GenericButton>
  + <GenericButton size="xs">Option 3</GenericButton>
  + <GenericButton size="xs">Option 4</GenericButton>
  + </ButtonGroup>
  + </div>
  + ))
  +
  .add('Colors', () => (
  <div>
  {map(styles.Colors, (set, name) => (
  