docs: add storybook story for hashtag component

webapp/components/Hashtag/Hashtag.story.js

@@ -0,0 +1,18 @@
+import { storiesOf } from '@storybook/vue'
+import { withA11y } from '@storybook/addon-a11y'
+import Hashtag from './Hashtag.vue'
+import helpers from '~/storybook/helpers'
+
+helpers.init()
+
+storiesOf('Hashtag', module)
+  .addDecorator(withA11y)
+  .addDecorator(helpers.layout)
+  .add('clickable', () => ({
+    components: { Hashtag },
+    store: helpers.store,
+    data: () => ({
+      hashtag: 'SomeHashtag',
+    }),
+    template: '<hashtag :id="hashtag" />',
+  }))

webapp/components/Hashtag/Readme.md

@@ -1,7 +0,0 @@
-### Example
-
-Tag "Liebe"
-
-```
-<hc-hashtag name="Liebe" />
-```