add simple install script and update readme

README.md

@@ -3,11 +3,11 @@ Josue's dotfiles
 Uses GNU Stow to manage simlink. Place files as they where in $HOME
 
 # Usage
-Place dotfiles in $HOME
 
 ```console
 clone into $HOME
 cd dotfiles
 stow .
 ```
+If stow is not installed use ./install.sh from .dotfiles repo