update file descriptions

	add note about x64 and server setup is for use on DigitalOcean Droplets

On branch centos7
Changes to be committed:

	modified:   README.md
	modified:   configuresudoers.sh
	modified:   scripts/aliases.sh
	modified:   scripts/firewalld.sh
	modified:   scripts/lemp.sh
	modified:   scripts/linux_update.sh
	modified:   scripts/middleman.sh
	modified:   scripts/nginx_config.sh
	modified:   scripts/server_ssh.sh
	modified:   scripts/swap.sh
	modified:   scripts/wordpress_install.sh
	modified:   setup.sh