feat(components): add RadioButton

src/components/RadioButton/RadioButton.stories.js

@@ -0,0 +1,22 @@
+import { withKnobs, text, select, boolean } from '@storybook/addon-knobs';
+import Component from './RadioButton.Story.svelte';
+
+export default { title: 'Radio Button', decorators: [withKnobs] };
+
+const labelPositions = {
+  'Left (left)': 'left',
+  'Right (right)': 'right'
+};
+
+export const Default = () => ({
+  Component,
+  props: {
+    name: text('Form item name (name)', 'test'),
+    value: text('Value (value)', 'standard'),
+    labelText: text('Label text (labelText)', 'Standard Radio Button'),
+    labelPosition: select('Label position (labelPosition)', labelPositions, 'right'),
+    disabled: boolean('Disabled (disabled)', false)
+  }
+});
+
+export const Skeleton = () => ({ Component, props: { story: 'skeleton' } });