doc: update ReadMe with installation commands

README.md

@@ -2,3 +2,23 @@
 
 A starter template for [LazyVim](https://github.com/LazyVim/LazyVim).
 Refer to the [documentation](https://lazyvim.github.io/installation) to get started.
+
+# 🛠️ Installation
+
+## TL;DR
+
+  ```sh
+  git clone https://forge.chapril.org/michel_ouba/LazyVim.git ~/.config/nvim
+  ```
+
+## Make a backup of your current Neovim files:
+
+  ```sh
+  # required
+  mv ~/.config/nvim{,.bak}
+
+  # optional but recommended
+  mv ~/.local/share/nvim{,.bak}
+  mv ~/.local/state/nvim{,.bak}
+  mv ~/.cache/nvim{,.bak}
+  ```