fix #11 add interactive workflow

Author: boly38

README.md

@@ -2,11 +2,30 @@
 
 [![NPM](https://nodei.co/npm/dropbox-refresh-token.png?compact=true)](https://npmjs.org/package/dropbox-refresh-token)
 
+## Quickstart
 
-## About Dropbox long-lived tokens (and offline mode access)
-Dropbox didn't provide anymore (since On September 30th, 2021) long-live access token from dropbox portal ([src](https://dropbox.tech/developers/migrating-app-permissions-and-access-tokens#retiring-legacy-tokens)).
+HowTo get Dropbox refresh-token and/or access-token (console interactive mode)
 
-In order to access offline to dropbox services without having to login, you will need:
+````bash
+npm i -g dropbox-refresh-token@latest
+get_refresh_token
+# follow instructions
+````
+NB: `get_refresh_token` binary has some alias : `drt` and `dropbox_get_refresh_token`.
+
+NB2: if you have cloned this project you could instead invoke this with `./bin/get_refresh_token.js`
+
+## Context : about Dropbox tokens
+
+Short context about Dropbox long-lived tokens (and offline mode access).
+
+Dropbox didn't provide anymore (since On September 30th, 2021) long-live access token from dropbox portal ([src](https://dropbox.tech/developers/migrating-app-permissions-and-access-tokens#retiring-legacy-tokens)). This was the way to use token for offline applications.
+
+Now, in order to access offline to dropbox services without having to login, 
+you will need an offline **refresh-token**. 
+And with this token you application is able to request a short-lived access token to call Dropbox API. 
+
+Here are the steps:
 1) to ask an **access-code for an "offline" token-access-type** 
    - this step require to login to allow application access.
 2) get a (long-lived) **refresh-token** with this access-code.
@@ -29,29 +48,40 @@ Having this **refresh-token** in "offline" mode (without login requirement) you
 
 ## Project features
 Feature for a given DropBox app (appKey, appSecret).
-- (step 1) build login url  to allow application access and then retrieve short-lived access code for an "offline" token-access-type (appKey only)
+- (step 1) build login url to allow application access and then retrieve short-lived access code for an "offline" token-access-type (appKey only)
+`getShortLivedAccessCodeUrlViaLoginUrl(appKey)`
 - (step 2) provide method to call Dropbox API that ask (long-lived) refresh-token from this short-lived access code (accessCode, appKey, appSecret).
+`getRefreshToken(shortLivedAccessCode, appKey, appSecret, logToken = false)`
 - (step 3++) provide method to call Dropbox API that ask a fresh (short-lived) access token from a valid refresh-token (refreshToke, appKey, appSecret).
+`refreshAccessToken(refresh_token, appKey, appSecret, logToken = false)`
 
 ## HowTo use "dropbox-refresh-token" library
 
-- Setup
+- Setup this project as dependency
 ````bash
 npm i dropbox-refresh-token
 ````
 
 - Integration examples
 ````javascript
-import {isSet, getShortLivedAccessCodeUrlViaLoginUrl, getRefreshToken, refreshAccessToken} from "dropbox-refresh-token";
+import {
+    isSet, getShortLivedAccessCodeUrlViaLoginUrl, 
+    getRefreshToken, refreshAccessToken
+} from "dropbox-refresh-token";
 
-import {isSet, getCurrentAccount, isAccessTokenValid} from "dropbox-refresh-token";
+import {
+    isSet, getCurrentAccount, isAccessTokenValid
+} from "dropbox-refresh-token";
 
 ````
 
-## Console mode step-by-step to retrieve Dropbox RefreshToken
+### Another example - step-by-step to retrieve Dropbox RefreshToken
 
 <!> original idea is [FranklinThaker/Dropbox-API-Uninterrupted-Access](https://github.com/FranklinThaker/Dropbox-API-Uninterrupted-Access) which provide (webApplication mode)
 
+This workflow rely on environment variables and require project install
+(cf. § quickstart for more modern workflow)
+
 ````bash
 git clone https://github.com/boly38/dropbox-refresh-token.git
 cd dropbox-refresh-token
@@ -71,3 +101,5 @@ node src/dropbox_is_token_valid.js
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+
+

bin/get_refresh_token.js

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+import {interactiveGetRefreshToken} from "../src/dropbox_refresh_token_interactive.js";
+
+await interactiveGetRefreshToken();