Update README.md

Author: ShimShim27

README.md

@@ -1,10 +1,47 @@
 # PeerRTC Twilio IceServers ☃️
-* A simple backend server used by [PeerRTC](https://github.com/PeerRTC/PeerRTC) for retrieving default ice servers provided by [Twilio](https://www.twilio.com/).
+A simple backend server used by [PeerRTC](https://github.com/PeerRTC/PeerRTC) for retrieving default ice servers provided by [Twilio](https://www.twilio.com/).
+Using this [server](https://github.com/PeerRTC/PeerRTC-Twilio-IceServers) is optional since there are a lot of ways to obtain ice servers. 
 
+## 💡 Additional Info
 * If no `configurations` parameter are provided in the [PeerRTC constructor](https://github.com/PeerRTC/PeerRTC#peerrtc-constructor), 
-then the module will automatically fetch iceServers from the [server](https://github.com/PeerRTC/PeerRTC-Twilio-IceServers) owned by us.
+then the module will automatically fetch ice servers from the [server](https://github.com/PeerRTC/PeerRTC-Twilio-IceServers) owned by us.
 
-* Using this [server](https://github.com/PeerRTC/PeerRTC-Twilio-IceServers) is optional since there are a lot of ways to obtain ice servers. It is also adviseable to provide own
-way of obtaining ice servers since we are only using free account in [Twilio](https://www.twilio.com/). 
+* It is adviseable to provide own way of obtaining ice servers since we are only using free account in [Twilio](https://www.twilio.com/). 
 
-* Feel free the [source code]((https://github.com/PeerRTC/PeerRTC-Twilio-IceServers)) as template.
+## ⚙️ Setup
+1. Create account and log in [Twilio](https://www.twilio.com/).
+2. Install [Node.js](https://nodejs.org/en/) first. Skip this step if already installed.
+3. Clone this [repository]([https://github.com/PeerRTC/PeerRTC-Server](https://github.com/PeerRTC/PeerRTC-Twilio-IceServers)).
+4. In command line, navigate to root directory of the newly downloaded repository.
+5. Install all needed dependencies via `npm install` in the command line.
+6. Set the enviroment variables. The server needed the TOKEN and SID environment as it will be passed
+in the Twilio api. In the command line,
+```
+set SID=your-account-sid
+set TOKEN=your-token
+```
+Account sid and token can be found in Twilio [console](https://console.twilio.com/) on Account Info section.
+
+7. Start the server by entering `npm start` in the command line.
+
+## 👨‍🏫 Usage 
+The server is using the getIceServers get method to return an array of ice servers.
+```
+https://your-server.com/getIceServers
+```
+The returned array can be inserted in the [PeerRTC constructor](https://github.com/PeerRTC/PeerRTC#peerrtc-constructor) as follows:
+```
+fetch("https://your-server.com/getIceServers")
+  .then(response=>response.json())
+  .then(iceServers=>{
+  
+    serverURL = "https://my-own-server-url.com"
+    configurations = {
+      iceServers: iceServers,
+      ...
+    }
+    
+   peer = new PeerRTC(serverURL, configurations)
+  })
+
+```