init storybook and write two stories

Author: rwieruch

.prettierrc

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+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

.storybook/config.js

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+import { configure } from '@storybook/react';
+
+// pick all stories.js files within the src/ folder
+const req = require.context('../src', true, /stories\.js$/);
+
+function loadStories() {
+  req.keys().forEach(filename => req(filename));
+}
+
+configure(loadStories, module);