create install.sh and update README

README.md

@@ -1,9 +1,20 @@
 # DOTFILES
 ## Configuration
 
-### Tools I use on my different machine
-- alacritty
-- fish
-- helix
-- mango
-- zellij
+### Tools configuration folder
+- [alacritty](https://alacritty.org/)
+- [fish](https://fishshell.com/)
+- [helix](https://helix-editor.com/)
+- [mango](https://mangowm.github.io/) with [dankmaterialshell](https://danklinux.com/)
+- [zellij](https://zellij.dev/)
+
+### Prerequisite
+- [stow](https://www.gnu.org/software/stow/) (to stow dotfiles)
+- [eza](https://eza.rocks/) (ls replacement used in the installation script)
+
+### Install
+```
+cd $HOME
+git clone https://codeberg.org/Guiglin/dotfiles.git
+./install.sh
+```