📝 Update README

gatsby-theme-auth0/README.md

@@ -47,6 +47,27 @@ module.exports = {
 };
 ```
 
+Set up your login/logout buttons and you're good to go!
+
+```jsx
+import React from "react";
+import { AuthService, useAuth } from "gatsby-theme-auth0";
+
+export default () => {
+  const { isLoggedIn, profile } = useAuth();
+  return (
+    <div>
+      {profile && <p>Hello {profile.name}</p>}
+      {isLoggedIn ? (
+        <button onClick={AuthService.logout}>Logout</button>
+      ) : (
+        <button onClick={AuthService.login}>Login</button>
+      )}
+    </div>
+  );
+};
+```
+
 ### Theme options
 
 | Key            | Default                  | Required | Description                     |