Changes to more pages (#29)

* Changes to more pages

* fix: correct thumbnail URL in config.json

Changed image URI from lnbits/tpos to lnbits/nwcprovider.

* Fix lint after main merge (tasks.py)

- remove trailing whitespace (ruff W291)
- collapse description chain (black)

README.md

@@ -1,3 +1,13 @@
+<a href="https://lnbits.com" target="_blank" rel="noopener noreferrer">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://i.imgur.com/QE6SIrs.png">
+    <img src="https://i.imgur.com/fyKPgVT.png" alt="LNbits" style="width:280px">
+  </picture>
+</a>
+
+[![License: MIT](https://img.shields.io/badge/License-MIT-success?logo=open-source-initiative&logoColor=white)](./LICENSE)
+[![Built for LNbits](https://img.shields.io/badge/Built%20for-LNbits-4D4DFF?logo=lightning&logoColor=white)](https://github.com/lnbits/lnbits)
+
 # NWC Service Provider Extension for [LNbits](https://github.com/lnbits/lnbits)
 
 Easily connect your LNbits wallets via [NWC](https://nwc.dev/).
@@ -68,3 +78,10 @@ The "Configuration" page of the NWC Service Provider extension can be accessed b
 > For example, in shared or community lnbits instances, where users are unaware of this functionality, they might assume a payment has failed and attempt to pay a new invoice with a different wallet, only for the instance to come back online and process the original payment request, potentially leading to duplicate payments.
 >
 > For this reason, unless you are trying to tackle this specific issue, it is recommended to leave this setting at `0`.
+
+## Powered by LNbits
+
+[LNbits](https://lnbits.com) is a free and open-source lightning accounts system.
+
+[![Visit LNbits Shop](https://img.shields.io/badge/Visit-LNbits%20Shop-7C3AED?logo=shopping-cart&logoColor=white&labelColor=5B21B6)](https://shop.lnbits.com/)
+[![Try myLNbits SaaS](https://img.shields.io/badge/Try-myLNbits%20SaaS-2563EB?logo=lightning&logoColor=white&labelColor=1E40AF)](https://my.lnbits.com/login)