include commander and update README

ts/smartcli.plugins.ts

@@ -3,6 +3,7 @@
 export let path = require("path");
 export let beautylog = require("beautylog");
 export let cliff = require("cliff");
+export let commander = require("commander");
 export let inquirer = require("inquirer");
 export let smartparam = require("smartparam");
 export let argv = require('yargs').argv;