unused packages removed, readme added

zenoh-ts/examples/chat/README.md

@@ -0,0 +1,24 @@
+# Zenoh-ts Chat Example
+
+This example demonstrates usage of zenoh-ts library in real web application.
+
+To start the example follow these steps:
+
+1. Build the zenoh-ts library (see root [README](../../README.md))
+
+1. Start zenohd with websocket plugin (see root [README](../../README.md))
+
+1. Build and run chat example. Browser window should automatically open
+
+   ```sh
+   npm install
+   npm run build
+   npm run start
+   ```
+
+The example uses "importmap" approach to run the project. This is done purposedly to
+verify that library is ready to work directly in browser without any additional bundling.
+
+Note thought that dependent libraries are loaded from the cloud instead of local node_modules in this approach.
+This is necessayr because some of them (especially `channel-ts`) is written with CommonJS module
+loading system and can't work in browser without repacking.