README.md

move vars into run so users don't have to modify vars.sh manually
remove $USER_NAME and use $HOME instead for simplicity in paths
comment out creation of new users

 Changes to be committed:
	modified:   README.md
	modified:   includes/base.lib
	modified:   includes/git.lib
	modified:   includes/software.lib
	modified:   run.sh
	modified:   scripts/aliases.sh
	modified:   scripts/linux_update.sh
	modified:   scripts/ssh_key.sh
	modified:   scripts/terminal_config.sh
	new file:   scripts/wordpress_dev.sh
	deleted:    vars.sh