update README.md

local.js

@@ -1,11 +1,22 @@
-const {
-    TCPRelay
-} = require('./tcprelay');
-new TCPRelay({
-    localAddress: '127.0.0.1',
-    localPort: 1080,
-    serverAddress: '127.0.0.1',
-    serverPort: 1081,
-    password: 'shadowsocks-over-websocket',
-    method: 'aes-256-cfb'
-}, true, 'info').bootstrap();
+const TCPRelay = require('./tcprelay').TCPRelay;
+const local = require('commander');
+
+local
+    .version('0.1.0')
+    .option('-m --method [method]', 'encryption method, default: aes-256-cfb')
+    .option('-k --password [password]', 'password')
+    .option('-s --server-address [address]', 'server address')
+    .option('-p --server-port [port]', 'server port, default: 8388')
+    .option('-b --local-address [address]', 'local binding address, default: 127.0.0.1')
+    .option('-l --local-port [port]', 'local port, default: 1080')
+    .parse(process.argv);
+
+var relay = new TCPRelay({
+    localAddress: local.localAddress || '127.0.0.1',
+    localPort: local.localPort || 1080,
+    serverAddress: local.serverAddress || '127.0.0.1',
+    serverPort: local.serverPort || 8388,
+    password: local.password || 'shadowsocks-over-websocket',
+    method: local.method || 'aes-256-cfb'
+}, true, 'info');
+relay.bootstrap();