feat: update README and configuration for Neovim installation and emoji font support

Signed-off-by: juliano.barbosa <julianomb@gmail.com>

README.md

@@ -27,6 +27,7 @@ External Requirements:
 - Clipboard tool (xclip/xsel/win32yank or other depending on the platform)
 - A [Nerd Font](https://www.nerdfonts.com/): optional, provides various icons
   - if you have it set `vim.g.have_nerd_font` in `init.lua` to true
+- Emoji fonts (Ubuntu only, and only if you want emoji!) `sudo apt install fonts-noto-color-emoji`
 - Language Setup:
   - If you want to write Typescript, you need `npm`
   - If you want to write Golang, you will need `go`
@@ -212,14 +213,14 @@ sudo apt update
 sudo apt install make gcc ripgrep unzip git xclip curl
 
 # Now we install nvim
-curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim-linux64.tar.gz
-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
+curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim-linux-x86_64.tar.gz
+sudo rm -rf /opt/nvim-linux-x86_64
+sudo mkdir -p /opt/nvim-linux-x86_64
+sudo chmod a+rX /opt/nvim-linux-x86_64
+sudo tar -C /opt -xzf nvim-linux-x86_64.tar.gz
 
 # make it available in /usr/local/bin, distro installs to /usr/bin
-sudo ln -sf /opt/nvim-linux64/bin/nvim /usr/local/bin/
+sudo ln -sf /opt/nvim-linux-x86_64/bin/nvim /usr/local/bin/
 ```
 </details>
 <details><summary>Fedora Install Steps</summary>