fixed install script issues

etcs/install.sh

@@ -9,12 +9,11 @@ cp -R lighttpd/ /etc
 cp dnsmasq.conf /etc
 cp rc.local /etc
 cp -R ../frontend /var/www/html
-cd /etc/lighttpd
-chmod +x edit_ssid.sh
-./edit_ssid
-
 mkdir -p /usr/local/lib/TeraHz
 cp -R ../backend/* /usr/local/lib/terahz
+cd /etc/lighttpd
+chmod +x edit_ssid.sh
+./edit_ssid.sh
 
 systemctl unmask dnsmasq hostapd lighttpd
 systemctl enable dnsmasq hostapd lighttpd