Add treesitter context.

README.md

@@ -72,6 +72,8 @@ Neovim supports a wide variety of UI's.
 
 #### Treesitter Support
 
+Treesitter is a new system coming in Neovim 0.5 that incrementally parses your code into a tree that works, even with errors in your syntax. These colorschemes have specifically set colors for treesitter highlight groups. Vim colorschemes will work with the new groups out of the box. 
+
 - [bluz71/vim-nightfly-guicolors](https://github.com/bluz71/vim-nightfly-guicolors) - nightfly is a dark GUI color scheme heavily inspired by Sarah Drasner's Night Owl theme.
 - [bluz71/vim-moonfly-colors](https://github.com/bluz71/vim-moonfly-colors) - moonfly is a dark color scheme with Treesitter support
 - [ChristianChiarulli/nvcode-color-schemes.vim](https://github.com/ChristianChiarulli/nvcode-color-schemes.vim) - nvcode, onedark, nord colorschemes with Treesitter support