Update README.md

Author: jfabellera

README.md

@@ -1,22 +1,48 @@
 # Billy
 A MERN stack application created to maintain my expenses.
 
-### Features
-- Create new expenses
-- View expenses
-- Edit expenses
-- Delete expenses
-- View basic statistics about expenses
+# Features
+- Expenses
+   - Title, amount, category, date, group, and description attributes
+   - Sort by attribute
+   - Search by title
+- Groups
+   - Group expenses together i.e. by card or bank account
+   - View group distributions for the month and year on the dashboard
 
-### Installing
+# Usage
+## Installing
 1. Clone the repository
-2. Place a `.env` file in the root project folder with the following environment variables:
-   - MONGODB_URI=<mongodb url>
-   - JWT_ACCESS_SECRET=<your secret key>
-   - JWT_REFRESH_SECRET=<your secret key>
-3. Run `npm install` in the root project folder.
-4. Install nodemon with `npm install -g nodemon`
-5. Run `npm run auth` to start authentication server
-6. Run `npm run express` to start the express API server
-7. Run `npm run client` to start the react app
-8. Navigate to (http://localhost:3000) in your browser to use the application
+2. Place a `.env` file in _backend/_ with the following environment variables:
+   - MONGODB_URI=[_mongodb uri_]
+   - JWT_ACCESS_SECRET=[_secret for access tokens_]
+   - JWT_REFRESH_SECRET=[_secret for refresh tokens_]
+3. Place a `.env` file in _backend/_ with the following environment variables:
+   - REACT_APP_AUTH_URL=[_url for auth server (e.g. http://localhost:3000)_]
+   - REACT_APP_API_URL=[_url for api server (e.g. http://localhost:4000)_]
+4. Run `npm install` in the _backend/_.
+5. Run `npm install` in the _frontend/_.
+
+## Running
+
+### Development
+1. Open a new terminal in _backend/_ and run `npm run auth`.
+2. Open a new terminal in _backend/_ and run `npm run express`.
+3. If you are on Linux/MacOS:
+   - Open _frontend/package.json_ 
+   - Under `scripts`, edit `start` to be
+   ```
+   "start": "PORT=5000 react-script start",
+   ```
+3. Open a new terminal in _frontend/_ and run `npm start`.
+
+
+### Production
+1. Open the terminal
+2. Install pm2 by running `npm install -g pm2`
+3. Navigate to _backend/_
+4. Start the authentication server by running `sudo pm2 start authServer.js --name auth`
+5. Start the API server by running `sudo pm2 start app.js --name api`
+6. Navigate to _frontend/_
+7. Build a production version of the react-app by running `npm run build`
+8. Start the react-app by running `sudo pm2 serve build 5000 --spa --name client`