edit action list

now you can edit the action list according to the actions defined 01-info

default action is defined in 95-default-action.sh

example

function parse_action(){
    case "$1" in
        help)
            script_usage
            ;;
        list)
            shift
            LNMP_list $@
            ;;
        install)
            shift
            LNMP_install $@
            ;;
        *)
            script_exit "unknown action $1." 1
            ;;
    esac
}