adding snapshot test

Author: alexandercbooth

src/template/__tests__/index-spec.js

@@ -0,0 +1,12 @@
+import * as React from "react";
+import { shallow } from "enzyme";
+import toJson from "enzyme-to-json";
+
+import Index from "../pages";
+
+describe("test", () => {
+  it("renders the index page correctly", () => {
+    const component = shallow(<Index />);
+    expect(toJson(component)).toMatchSnapshot();
+  });
+});