Please add a link to a video on how to use this plugin

[ketkarameya]

Thank you for developing this plugin, I have thoroughly enjoyed using it. However, it was very difficult to explore the various features in this plugin just by reading the documentation. I found this video very useful - Introducing GitHub pull requests for Visual Studio Code. I would recommend adding a link to this (or any other video) on the homepage and here. I think it will help users get started with this plugin quickly (without having to read a lot or tinker).