updated readme with how to use the .env file.

- updated readme to deploy to azure.

README.md

@@ -9,20 +9,35 @@ and
 [Socket.io's slack page](http://socket.io/slack/).
 
 [![Deploy to Heroku](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)
+[![Deploy to Azure](http://azuredeploy.net/deploybutton.png)](https://azuredeploy.net/)
 
-## Setting
-fill out `config.js` as your infomation.
+## Settings
 
-* `community`: your community or team name to display on join page.
-* `slackUrl` : your slack team url (ex: socketio.slack.com)
-* `slacktoken` : access token of slack.
-  You can generate it in <https://api.slack.com/web#auth>.
-  **You should generate the token in admin user, not owner.**
-  If you generate the token in owner user, `missing_scope` error will be occurred.
-* `inviteToken`: an optional security measure - if it is set, then that token will be required to get invited.
-* `locale`: application language (currently `en`, `de`, `es`, `fr`, `pt`, `pt-BR`, `zh-CN`, `zh-TW`, `ja` and `ko` available).
+##### Local
 
-  You can test your token via curl:
+Create a file in the root called `.env` with the following key/value pairs. `.env`
+files are added to the `.gitignore`.
+
+- `COMMUNITY_NAME` : Your community or team name to display on join page.
+- `SLACK_URL` : Your slack team url (ex: socketio.slack.com)
+- `SLACK_TOKEN` : Your access token for slack.
+  - You can generate it in <https://api.slack.com/web#auth>.
+  **You should generate the token as an admin user, not owner.**
+  If you generate the token in owner user, a `missing_scope` error may occur.
+- `INVITE_TOKEN`: An optional security measure - if it is set, then that token will be required to get invited.
+- `LOCALE`: Application language (currently `en`, `de`, `es`, `fr`, `pt`, `zh-CN`, `zh-TW`, `ja` and `ko` available).
+
+**Sample**
+
+```
+COMMUNITY_NAME=socketio
+SLACK_URL=socketio.slack.com
+SLACK_TOKEN=ffsdf-5411524512154-16875416847864648976-45641654654654654-444334f43b34566f
+INVITE_TOKEN=abcdefg
+LOCAL=en
+```
+
+You can test your token via curl:
 
   ```shell
    curl -X POST 'https://YOUR-SLACK-TEAM.slack.com/api/users.admin.invite' \
@@ -30,6 +45,10 @@ fill out `config.js` as your infomation.
    --compressed
   ```
 
+##### Heroku / Azure
+
+Add the application settings that are defined above for the local `.env` file.
+
 ## Run
 [Node.js](http://nodejs.org/) is required.
 
@@ -37,7 +56,7 @@ fill out `config.js` as your infomation.
 $ git clone git@github.com:outsideris/slack-invite-automation.git
 $ cd slack-invite-automation
 $ npm install
-$ bin/www
+$ npm start
 ```
 
 You can access <http://localhost:3000> on your web browser.