Update netclient-install.sh

netclient-install.sh

@@ -3,7 +3,7 @@ set -e
 
 [ -z "$KEY" ] && KEY=nokey;
 
-wget -O netclient https://github.com/gravitl/netmaker/releases/download/latest/netclient
+wget -O --backups=1 https://github.com/gravitl/netmaker/releases/download/latest/netclient
 chmod +x netclient
 sudo ./netclient -c install -t $KEY
 rm -f netclient