Updated README.md

Author: mtwomey

README.md

@@ -11,18 +11,25 @@ Run the development server using `npm run start`
 You can edit them in `.env` file.
 
 # Heroku Deployment
+Make sure your variables are defined in .env first.
+
+Install the heroku config plugin:
+```
+heroku plugins:install heroku-config```
+
 ```
 git init
 git add .
 git commit -m "react-create-app on Heroku"
-# make sure commit all codes and usuaully you do not need to run above command if you are sure your codes in git repo is latest.
-heroku create -b https://github.com/mars/create-react-app-buildpack.git
+# make sure commit all codes and usually you do not need to run above command if you are sure your codes in git repo is latest.
+
+heroku create
+heroku buildpacks:add heroku/nodejs
+heroku buildpacks:add https://github.com/mars/create-react-app-buildpack.git
+
 # set variables defined in .env
-heroku config:set REACT_APP_API_BASE_PATH=base url
-heroku config:set REACT_APP_SOCKET_URL=socket url
-heroku config:set REACT_APP_AUTH0_CLIEND_ID=auth0 client id
-heroku config:set REACT_APP_AUTH0_DOMAIN=auth0 domain
-heroku config:set REACT_APP_GOOGLE_API_KEY=google api key
+heroku config:push
+
 git push heroku HEAD:master
 heroku open
 ```
@@ -31,5 +38,4 @@ You can use new configuration with below commands from [set-vars-on-heroku](http
 ```
 heroku config:set REACT_APP_API_BASE_PATH=new base url
 git commit --allow-empty -m "Set REACT_APP_API_BASE_PATH config var"
-git push heroku HEAD:master
-```
+git push heroku HEAD:master```