Update README.md

community-contributions/scriptnodeSetup/README.md

@@ -4,6 +4,8 @@ Login as root, then do:
 ```
 wget https://raw.githubusercontent.com/IeSua-lab/community-repo/scriptnodeSetup/community-contributions/scriptnodeSetup/joystream-node-install.sh
 
+chmod +x ./joystream-node-install.sh
+
 ./joystream-node-install.sh
 ```