message: add CounterLabel example to index.js
diff: @@ -18,12 +18,24 @@ import ButtonPrimary from './ButtonPrimary'
  import ButtonSecondary from './ButtonSecondary'
  import ButtonDanger from './ButtonDanger'
  import Flash from './Flash'
  +import CounterLabel from './CounterLabel'
  const Index = props => (
  <Page>
  <KitProvider>
  <Library>
  <Library.Nav />
  + <Example name="CounterLabel">
  + <CounterLabel>
  + 12
  + </CounterLabel>
  + <CounterLabel bg={'gray'}>
  + 13
  + </CounterLabel>
  + <CounterLabel bg={'gray-light'}>
  + 13
  + </CounterLabel>
  + </Example>
  <Example name='Heading'>
  <Heading>
  Heading
  