Don't ask to clone dotfiles if already done

tforgione.sh

@@ -155,12 +155,14 @@ clone_dotfiles() {
 }
 
 configure_dotfiles() {
+    if [ ! -d $HOME/.config/dotfiles ]; then
         yes_no_ask "do you wish to configure the dotfiles ?"
         if [ $? -ne 0 ]; then
             return
         fi
 
         clone_dotfiles
+    fi
 }
 
 configure_shell() {