added more detail to the lab

01 Lab 3 Async Code.md

@@ -30,6 +30,7 @@ When a JavaScript program is invoked from the console, the entire invocation str
 Study the `currency.js` script carefully. When we run this script we need to pass the currency we want as a _runtime parameter_ like this: `node currency GBP`.
 
 1. If the script is invoked correctly there should be 3 indexes in the `process.argv` array. Index 0 contains the string `node`, index 1 contains the string `currency` and index 2 contains the string `GBP`.
+    1. You can see the `process.argv` array logged to the console.
 2. If the array is shorter than 3 indexes we throw an error
 3. Finally we take the third index and convert it to upper case, storing the resulting string in an immutable variable (constant).
 

exercises/01_nodejs/03_async/currency.js

@@ -2,7 +2,7 @@
 'use strict'
 
 const request = require('request')
-
+console.log(process.argv)
 try {
 	if (process.argv.length < 3) {
 		throw 'missing parameter'