docs(examples): add instructions

examples/README.md

@@ -0,0 +1,25 @@
+**NOTE:**
+Build the library first before running the examples!
+
+```bash
+npm run build
+```
+
+## Browser Example
+
+```bash
+cd examples/browser/web
+npm install
+npm run dev
+
+# Proxy server
+deno run --allow-net --allow-read examples/browser/proxy/deno.ts
+```
+
+## Downloader Example
+
+```bash
+cd examples/downloader
+npm install
+npx tsx main.ts
+```