Updates one command-liner

Apparently PAM does not like nested scripts.

README.md

@@ -4,7 +4,7 @@
 You can install this configuration on a new system using
 
 ```bash
-curl -sSL https://git.tuleu.science/atuleu/home/raw/branch/master/update.sh | bash
+curl -sSL https://git.tuleu.science/atuleu/home/raw/branch/master/update.sh | bash && $HOME/.home/update.sh
 ```
 
 ## Keeping it synced

update.sh

@@ -260,12 +260,11 @@ function update_repos() {
 	run_git submodule update
 }
 
-if [ ! -d "$HOME/.home" ]
+if [ -z $BASH_SOURCE ] && [ ! -d "$HOME/.home" ]
 then
 	echo "--- cloning git.tuleu.science:atuleu/home.git in $HOME/.home"
 	pushd $HOME 1>/dev/null
 	run_git clone https://git.tuleu.science/atuleu/home.git .home
-	.home/update.sh "$@"
 	popd 1>/dev/null
 else
 	update_home