Add hrsh7th/nvim-compe (#17)

* Add hrsh7th/nvim-compe

* Completion header

Co-authored-by: Dave Lage <rockerboo@gmail.com>

README.md

@@ -28,11 +28,15 @@ Neovim supports a wide variety of UI's.
 #### (requires Neovim Nightly)
 
 - [neovim/nvim-lspconfig](https://github.com/neovim/nvim-lspconfig)
-- [nvim-lua/completion-nvim](https://github.com/nvim-lua/completion-nvim)
 - [nvim-lua/lsp-status.nvim](https://github.com/nvim-lua/lsp-status.nvim)
 - [nvim-lua/lsp_extensions.nvim](https://github.com/nvim-lua/lsp_extensions.nvim)
 - [RishabhRD/nvim-lsputils](https://github.com/RishabhRD/nvim-lsputils)
 
+### Completion
+
+- [nvim-lua/completion-nvim](https://github.com/nvim-lua/completion-nvim)
+- [hrsh7th/nvim-compe](https://github.com/hrsh7th/nvim-compe)
+
 ### General
 
 - [npxbr/glow.nvim](https://github.com/npxbr/glow.nvim) - Markdown preview using glow