docs: add basic AsFormData example (draft)

README.md

@@ -810,3 +810,9 @@ Or you can just run it with one click [on StackBlitz](https://stackblitz.com/~/g
 
 Built on 🌎 with ✍️, 🧠 and a bit of 🤖
 
+## AsFormData (Draft Docs)
+
+Basic example of binding form data to a stream:
+
+```js
+import { AsFormData } from "rimmel";

examples/asformdata-basic.js

@@ -0,0 +1,27 @@
+// Example: Basic usage of AsFormData with Rimmel
+// This is just a placeholder demo for docs — will expand later
+
+import { rml, AsFormData, JSONDump } from 'rimmel';
+import { Subject } from 'rxjs';
+
+// Create a stream to collect form data
+const formDataStream = new Subject();
+
+document.body.innerHTML = rml`
+  <form onsubmit="${AsFormData(formDataStream)}">
+    <label>
+      Name:
+      <input name="name" required>
+    </label>
+    <br>
+    <label>
+      Email:
+      <input name="email" type="email" required>
+    </label>
+    <br>
+    <button type="submit">Submit</button>
+  </form>
+
+  <h3>Form Output:</h3>
+  <div>${JSONDump(formDataStream)}</div>
+`;