update README

Author: poga

README.md

@@ -4,9 +4,31 @@
 
 Peer-to-peer TCP socket proxy with WebRTC, use [centrifugo](https://centrifugal.github.io/centrifugo/) as the signal server.
 
+## Setup
+
+* Install `webrtc-socket-proxy`
+
+```
+$ go get -u github.com/poga/webrtc-socket-proxy
+```
+
+* Setup [centrifugo](https://github.com/centrifugal/centrifugo/releases) with [example config](config.centrifugo.test.json)>
+
+* Start proxies
+
+```
+$ webrtc-socket-proxy -signal=<SIGNAL_SERVER_ADDR> -secret=<SIGNAL_SERVER_SECRET> -as=<PEER_ID> -upstreamAddr=localhost:8000
+$ webrtc-socket-proxy -signal=<SIGNAL_SERVER_ADDR> -secret=<SIGNAL_SERVER_SECRET> -to=<PEER_ID> -listen=:4444
+```
+
+
 ## Usage
 
 
 ## Roadmap
 
-- [ ] Multiplex Connections
+- [ ] Multiplex Connections
+
+## License
+
+The MIT License

main.go

@@ -17,8 +17,6 @@ var (
 
 	as = flag.String("as", "", "proxy ID")
 	to = flag.String("to", "", "proxy target ID")
-
-	nodeID = flag.String("node", "", "node ID")
 )
 
 func main() {