installation script for OS Devuan (#95)

* adding devuan

* add devaun desc to README
make update and upgrade more noisy
correct path for devuan in pre-install

* some untested code for the source install - source installation is broken in Debian installation script and I have not debugged the problem. Focusing on the packaged version first.

devuan/install.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+#move to script directory so all relative paths work
+cd "$(dirname "$0")"
+
+#includes
+. ./resources/config.sh
+. ./resources/colors.sh
+. ./resources/environment.sh
+
+#Update to latest packages
+verbose "Update installed packages"
+#apt-get upgrade && apt-get update -y --force-yes
+# --force-yes is dangerous as per the man page. Lets use -y
+apt-get -q update && apt-get -q --assume-yes upgrade
+
+#Add dependencies
+apt-get install -q -y lsb-release sudo
+
+#IPTables
+resources/iptables.sh
+
+#FusionPBX
+resources/fusionpbx.sh
+
+#NGINX web server
+resources/nginx.sh
+
+#PHP
+resources/php.sh
+
+#FreeSWITCH
+resources/switch.sh
+
+#Fail2ban
+resources/fail2ban.sh
+
+#Optional CLI SIP monitoring tool
+resources/sngrep.sh
+
+#Postgres
+resources/postgres.sh
+
+#restart services
+if [ ."$php_version" = ."5" ]; then
+        service php5-fpm restart
+fi
+if [ ."$php_version" = ."7" ]; then
+        service php7.0-fpm restart
+fi
+
+service nginx restart
+service fail2ban restart
+
+#add the database schema, user and groups
+resources/finish.sh