[configs/releng] Add installation guide

Download and add the current installation guide as plain text.

Signed-off-by: Pierre Schmitz <pierre@archlinux.de>
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

README

@@ -401,6 +401,7 @@ EOF
 ** For configs/releng build.sh needs theses packages (build host):
  + dosfstools              for mkfs.vfat
  + patch                   for patch
+ + lynx                    for fetching the latest installation guide
 
 ** For these hooks needs these packages (on target root-image)
 * archiso

configs/releng/build.sh

@@ -145,6 +145,7 @@ make_customize_root_image() {
         chmod 440 ${work_dir}/root-image/etc/sudoers.d/g_wheel
         mkdir -p ${work_dir}/root-image/etc/pacman.d
         wget -O ${work_dir}/root-image/etc/pacman.d/mirrorlist 'https://www.archlinux.org/mirrorlist/?country=all&protocol=http&use_mirror_status=on'
+        lynx -dump -nolist 'https://wiki.archlinux.org/index.php/Installation_Guide?action=render' >> ${work_dir}/root-image/root/install.txt
         sed -i "s/#Server/Server/g" ${work_dir}/root-image/etc/pacman.d/mirrorlist
         patch ${work_dir}/root-image/usr/bin/pacman-key < ${script_path}/pacman-key-4.0.3_unattended-keyring-init.patch
         sed -i 's/#\(en_US\.UTF-8\)/\1/' ${work_dir}/root-image/etc/locale.gen

configs/releng/root-image/root/install.txt

+View this installation guide online at
+https://wiki.archlinux.org/index.php/Installation_Guide