Update README.md

Add video deo

README.md

@@ -2,6 +2,11 @@
 
 This is an extension to help decode invoices, lnurls and lightning addresses in [LNBits](https://lnbits.com). 
 
+## Demo (Video) 
+
+https://github.com/bitkarrot/decoder/assets/73979971/9621f31f-052b-46e4-a294-8cd5a17c8d30
+
+## Installation
 Install this extension using the manifest from this repository: 
 
 [https://raw.githubusercontent.com/bitkarrot/decoder/main/manifest.json](https://raw.githubusercontent.com/bitkarrot/decoder/main/manifest.json)
@@ -10,8 +15,6 @@ Add the above link to LNBits on the Admin Panel by Visiting:  Manage Server -> S
 
 <img width="480" alt="Screenshot 2024-01-08 at 3 37 25 PM" src="https://github.com/bitkarrot/decoder/assets/73979971/eb782af2-e4ae-4249-8f7d-ffa809693150">
 
-
-
 ## Example Usage
 
 ### Decode a BOLT11 invoice