renamed button file to .jsx, and fixed up button stories

Signed-off-by: Antonette Caldwell <[email protected]>

packages/design-system/src/stories/Button.stories.jsx

@@ -0,0 +1,37 @@
+import { Button } from '@layer5/sistent-components';
+
+export default {
+  title: 'Example/Button',
+  component: Button,
+  tags: ['autodocs'],
+};
+
+export const Primary = {
+  args: {
+    variant: "contained",
+    label: "contained"
+  }
+};
+
+export const Secondary = {
+  args: {
+    variant: "outlined",
+    label: 'outlined'
+  }
+};
+
+export const Large = {
+  args: {
+    variant: "text",
+    size: 'large',
+    label: 'large text'
+  }
+};
+
+export const Small = {
+  args: {
+    variant: "contained",
+    size: 'small',
+    label: 'small primary'
+  }
+};