Merge 'upstream' example of the classic complete keymaps

- Add a commented out example of the classic complete keymaps.
- Minor improvements of debian install instructions.

README.md

@@ -204,11 +204,13 @@ sudo apt install make gcc ripgrep unzip git neovim
 
 ```
 sudo apt update
-sudo apt install make gcc ripgrep unzip git
+sudo apt install make gcc ripgrep unzip git curl
 
 # Now we install nvim
 curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim-linux64.tar.gz
-sudo rm -rf /opt/nvim
+sudo rm -rf /opt/nvim-linux64
+sudo mkdir -p /opt/nvim-linux64
+sudo chmod a+rX /opt/nvim-linux64
 sudo tar -C /opt -xzf nvim-linux64.tar.gz
 
 # make it available in /usr/local/bin, distro installs to /usr/bin

lua/kickstart/plugins/cmp.lua

@@ -68,6 +68,12 @@ return {
           --  This will expand snippets if the LSP sent a snippet.
           ['<C-y>'] = cmp.mapping.confirm { select = true },
 
+          -- If you prefer more traditional completion keymaps,
+          -- you can uncomment the following lines
+          --['<CR>'] = cmp.mapping.confirm { select = true },
+          --['<Tab>'] = cmp.mapping.select_next_item(),
+          --['<S-Tab>'] = cmp.mapping.select_prev_item(),
+
           -- Manually trigger a completion from nvim-cmp.
           --  Generally you don't need this, because nvim-cmp will display
           --  completions whenever it has completion options available.