Add onClick props in storybook

This reason, users clicked on button and did not see any action, now it
logs the action

.storybook/config.js

@@ -42,12 +42,12 @@ addDecorator((fn, { kind, story }) => <div>
     </div>
   </nav>
   <div className="uk-margin-top uk-margin-left uk-margin-right uk-margin-bottom">
-    <a
+    {/* <a
       href={`javascript:
-    var script = document.createElement('script');
-    script.setAttribute('src', 'https://getuikit.com/migrate.min.js');
-    document.body.appendChild(script);
-  `}>test</a>
+      var script = document.createElement('script');
+      script.setAttribute('src', 'https://getuikit.com/migrate.min.js');
+      document.body.appendChild(script);
+    `}>test</a> */}
     {fn()}
   </div>
 </div>)

src/__tests__/Dropdown-test.js

@@ -1,5 +1,4 @@
 import renderer from 'react-test-renderer'
-
 import Dropdown from '../Dropdown'
 
 jest.useFakeTimers()

src/stories/Button.js

@@ -1,4 +1,4 @@
-import { storiesOf } from '@kadira/storybook'
+import { storiesOf, action } from '@kadira/storybook'
 import { Button } from 'uikit-react'
 
 // This is to work around: https://github.com/kadirahq/react-storybook-addon-info/issues/26#issuecomment-229029177
@@ -7,10 +7,10 @@ Button.displayName = 'Button'
 storiesOf('Button', module)
   .addWithInfo('Basic Usage', '', () => (
     <div className="uk-margin-bottom">
-      <Button primary>Primary</Button> &nbsp;
-      <Button success>Success</Button> &nbsp;
-      <Button danger>Danger</Button> &nbsp;
-      <Button link>Link</Button> &nbsp;
-      <Button type="submit">Submit</Button>
+      <Button primary onClick={action('onClick Primary')}>Primary</Button> &nbsp;
+      <Button success onClick={action('onClick Success')}>Success</Button> &nbsp;
+      <Button danger onClick={action('onClick Danger')}>Danger</Button> &nbsp;
+      <Button link onClick={action('onClick Link')}>Link</Button> &nbsp;
+      <Button type="submit" onClick={action('onClick Submit')}>Submit</Button>
     </div>
   ), { header: false, inline: true, propTables: [Button] })