Added demo to Connect a newly bought device to a specific WiFi network

demos.md

@@ -6,3 +6,20 @@ In the following video, we see how easy it is to use the API client
 
 <video src="./demos/simple_usage.mp4" width="800" height="600"  controls ></video>
 
+---
+
+## Connect a newly bought device to a specific WiFi network
+
+In this demo video we can see how we can use the API to connect a device that we just bought into our WiFi network without using Shelly App or Shelly cloud.
+
+In the video we do:
+1. Connect to the Shelly device's AP WiFi network
+2. Visit 192.168.33.1 (default AP network IP)
+3. Use the [connect-any-wifi-device-from-scratch.ts](https://github.com/intruder-detection/shelly-api-typescript/blob/demos/demos/connect-any-wifi-device-from-scratch.ts) script to connect the device to our WiFi network (script prompts for password/ssid/static IP)
+
+
+<video src="./demos/connect-any-wifi-device-from-scratch.mp4" width="800" height="600" controls ></video>
+
+4. Use [get-device-configuration.ts](https://github.com/intruder-detection/shelly-api-typescript/blob/demos/demos/get-device-configuration.ts) script to verify the configuration/status of the newly added device
+
+<video src="./demos/get-device-configuration.mp4" width="800" height="600" controls ></video>