add 'readline' to setup module

Author: Vitaliy Stoliarov

examples/util/setup.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const dotenv = require('dotenv')
+const Readline = require('readline-promise').default
 const argsFromEnv = require('./args_from_env')
 const D = require('./debug').get()
 const debug = D('>')
@@ -12,5 +13,12 @@ module.exports = {
   get args () {
     return argsFromEnv()
   },
-  debug
+  debug,
+  get readline () {
+    return Readline.createInterface({
+      input: process.stdin,
+      output: process.stdout,
+      terminal: false
+    })
+  }
 }