Update README.md

add screenshots

Author: bitkarrot

README.md

@@ -4,11 +4,17 @@ This is an extension to help decode invoices, lnurls and lightning addresses in
 
 ## Example Usage
 
-Decode a BOLT11 invoice
+### Decode a BOLT11 invoice
 
-Decode a LNURL
+<img width="1145" alt="Screenshot 2024-01-08 at 12 12 05 AM" src="https://github.com/bitkarrot/decoder/assets/73979971/0e424dfa-b1d4-46a3-877f-1cd337c99c14">
 
-Decode a Lightning Address
+### Decode a LNURL
+
+<img width="606" alt="Screenshot 2024-01-08 at 12 13 56 AM" src="https://github.com/bitkarrot/decoder/assets/73979971/eaa63c92-73e5-4525-aea7-68d719a304b7">
+
+### Decode a Lightning Address
+
+<img width="579" alt="Screenshot 2024-01-08 at 12 51 50 AM" src="https://github.com/bitkarrot/decoder/assets/73979971/51495f9e-2c9e-460c-a78c-119e6ffbfeb4">
 
 
 ## Get Started