More update

README.md

@@ -21,13 +21,18 @@ sudo apt install zsh
 ```shell
 git clone https://gitlab.viarezo.fr/2019hugueta2/shell-pics ~/shell-pics
 ```
+### Make file executable
+
+```shell
+sudo chmod +x ~/shell-pics/install.sh
+```
 
 #### Start installation
 
 Do **not** install as **sudo**.
 
 ```shell
-chmod +x ~/shell-pics/install.sh & ~/shell-pics/install.sh
+~/shell-pics/install.sh
 ```
 
 #### Follow instructions