Provide example in README

Author: markjaquith

.changeset/perfect-drinks-smile.md

@@ -0,0 +1,5 @@
+---
+"sveltekit-playwright-fetch-mock": patch
+---
+
+Provide example in README

README.md

@@ -4,4 +4,23 @@ Allows you to mock `fetch()` requests when running Playwright E2E tests on a Sve
 
 Playwright already lets you mock browser `fetch()` requests. This allows you to tell the SvelteKit dev server to deliver mocked responses for `fetch()` calls it makes while doing Server-Side Rendering.
 
-This can speed up your end-to-end tests and make them more reliable, as well as not require credentials for external APIs to be input to your continuous integration environment.
+This can speed up your end-to-end tests and make them more reliable, as well as not require credentials for external APIs to be input to your continuous integration environment.
+
+## Usage
+
+In your Playwright test:
+
+```ts
+import { expect, test } from '@playwright/test'
+import { mockFetch } from 'sveltekit-playwright-fetch-mock'
+
+test('Example.com test', async ({ page }) => {
+	await mockFetch(page, /^https:\/\/www\.example\.com\//, {
+		somedata: 'example',
+	})
+	await page.goto('/some-local-route-that-fetches-example-dot-com')
+	// Your Playwright assertions here.
+})
+```
+
+So what this means is that when you go to `/some-local-route-that-fetches-example-dot-com` in your SvelteKit app, and the `+page.server.js` or `+page.server.ts` file for that route calls `fetch` (using the one that SvelteKit provides you) to get data from `https://www.example.com/`, this package will intercept that request and return `{ somedata: "example" }`