Update readme

Change between branches for different plugins

README.md

@@ -1,5 +1,7 @@
 This is my nvim setup
 
+Check the branches for which version you want.
+
 These are the base plugins:
 
 Nvim-treesitter - https://github.com/nvim-treesitter/nvim-treesitter
@@ -34,3 +36,6 @@ AutoTag - https://github.com/windwp/nvim-ts-autotag
 
 Plenary - https://github.com/nvim-lua/plenary.nvim.git
 - required by other plugins
+
+CopilotChat - https://github.com/CopilotC-Nvim/CopilotChat.nvim</br>
+AI chatbox for Copilot or any other AI provider