Add dev env videos to readme (#964)

- Add full node wallet as a feature
- Formatting
- Add windows dev env video
- Add ubuntu dev env video

README.md

@@ -54,6 +54,7 @@ Thanks to the [apps](https://github.com/btcpayserver/btcpayserver-doc/blob/maste
 * Point of sale app
 * Crowdfunding app
 * Payment requests
+* Internal Web Wallet
 
 ## Getting Started
 
@@ -76,9 +77,10 @@ If you're a developer looking to help, but you're not sure where to begin, check
 
 Contributors looking to do something a bit more challenging, before opening a pull request, please [create an issue](https://github.com/btcpayserver/btcpayserver/issues/new/choose) or join [our community chat](https://chat.btcpayserver.org/) to get early feedback, discuss best ways to tackle the problem and to ensure there is no work duplication.
 
-You also have an awesome video of our contributors which explains you how to get started.
+- [Setting up development environment on Windows](https://www.youtube.com/watch?v=ZePbMPSIvHM)
+- [Setting up development environment Linux (Ubuntu)](https://www.youtube.com/watch?v=j486T_Rk-yw&t)
 
-[![Rockstar Dev and Britt Kelly - Btc Pay Server Code Along](https://img.youtube.com/vi/ZePbMPSIvHM/sddefault.jpg)](https://www.youtube.com/embed/VNMnd-dX9Q8)
+You also have an awesome video of our contributors which explains how to get started.[![Rockstar Dev and Britt Kelly - Btc Pay Server Code Along](https://img.youtube.com/vi/ZePbMPSIvHM/sddefault.jpg)](https://www.youtube.com/embed/VNMnd-dX9Q8)
 
 ## How to build