Added script upload-doc.sh to upload to ETSI FTP

#!/bin/bash

make clean

for i in [0-1]*.md; do sed -i "s/\.md\#/\.html\#/g" $i; done

make html

read -p "Please enter your username for FTP server (ETSI On Line account): " USER_INPUT

read -sp "Please enter your password for FTP server: " PASSWORD_INPUT

echo

lftp -u $USER_INPUT,$PASSWORD_INPUT ftp://osm-download.etsi.org << !

   set ftp:ssl-allow no

   lcd _build

   cd Documentation

   mirror -R html user-guide-new

   rm -r user-guide

   mv user-guide-new user-guide

   bye

!

git reset --hard