Fix broken storybook (#3030)

storybook/stories/autosuggest_textarea.story.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import { List } from 'immutable'
+import { action, storiesOf } from '@kadira/storybook';
+import AutosuggestTextarea from 'mastodon/components/autosuggest_textarea'
+
+const props = {
+  onChange: action('changed'),
+  onPaste: action('pasted'),
+  onSuggestionSelected: action('suggestionsSelected'),
+  onSuggestionsClearRequested: action('suggestionsClearRequested'),
+  onSuggestionsFetchRequested: action('suggestionsFetchRequested'),
+  suggestions: List([])
+}
+
+storiesOf('AutosuggestTextarea', module)
+  .add('default state', () => <AutosuggestTextarea value='' {...props} />)
+  .add('with text', () => <AutosuggestTextarea value='Hello' {...props} />)