README updates

README.md

@@ -1,16 +1,40 @@
 # coc-pses
-[PowerShellEditorService](https://github.com/PowerShell/PowerShellEditorServices) integration for [coc.nvim](https://github.com/neoclide/coc.nvim)
 
-Recommend to install with a plugin manager, for example:
+A vim plugin powered by
+[PowerShellEditorService](https://github.com/PowerShell/PowerShellEditorServices) and 
+[coc.nvim](https://github.com/neoclide/coc.nvim)
+to provide a rich PowerShell editing experience.
 
+Features include:
+* Intellisense/Completions
+* Go to definition
+* [PSScriptAnalyzer](https://github.com/PowerShell/PSScriptAnalyzer) integration
+* and much more!
+
+## Prerequisites
+
+1. vim/neovim
+1. [PowerShell Core](https://github.com/powershell/powershell) or Windows PowerShell
+
+## Installation
+
+### (Recommended) Install with a plugin manager like [vim-plug](https://github.com/junegunn/vim-plug):
+
+1. Add this to your `vimrc`/`Init.vim`
 ```vimL
 
 Plug 'yatli/coc-pses', {'do': { -> coc#pses#install()} }
 ...
 Plug 'neoclide/coc.nvim', {'tag': '*', 'do': { -> coc#util#install()}} 
 ```
+2. Reload vim.
+1. Run the vim command: `:PlugInstall`.
 
 ## TODO
-- pwsh core support
-- xplat support
-- REPL?
+- [x] pwsh core support
+- [x] xplat support
+- [ ] REPL?
+
+## Recommended plugins
+
+[vim-polyglot](https://github.com/sheerun/vim-polyglot) for syntax highlighting 🎨