1. add more example into example/README.md

2. add @luandnguyen contributor for #59

Author: jumperchen

README.md

@@ -43,7 +43,7 @@ To connect the socket manually, set the option `autoConnect: false` and call `.c
 
 For example,
 <pre>
-Socket socket = io('http://localhost:3000', <String, dynamic>{
+Socket socket = io('http://localhost:3000', &lt;String, dynamic>{
     'transports': ['websocket'],
     <b>'autoConnect': false</b>,
     'extraHeaders': {'foo': 'bar'} // optional
@@ -145,3 +145,4 @@ If you are new to Git or GitHub, please read [this guide](https://help.github.co
 * Thanks [@Oskang09](https://github.com/Oskang09) for https://github.com/rikulo/socket.io-client-dart/issues/21
 * Thanks [@bruce3x](https://github.com/bruce3x) for https://github.com/rikulo/socket.io-client-dart/issues/25
 * Thanks [@Kavantix](https://github.com/Kavantix) for https://github.com/rikulo/socket.io-client-dart/issues/26
+* Thanks [@luandnguyen](https://github.com/luandnguyen) for https://github.com/rikulo/socket.io-client-dart/issues/59

example/README.md

@@ -39,6 +39,80 @@ Port of awesome JavaScript Node.js library - [Socket.io-client v2.0.1](https://g
         socket.on('fromServer', (_) => print(_));
     }
 
+
+    
+### Connect manually
+To connect the socket manually, set the option `autoConnect: false` and call `.connect()`.
+
+For example,
+<pre>
+Socket socket = io('http://localhost:3000', &lt;String, dynamic>{
+    'transports': ['websocket'],
+    <b>'autoConnect': false</b>,
+    'extraHeaders': {'foo': 'bar'} // optional
+  });
+<b>socket.connect();</b>
+</pre>
+
+Note that `.connect()` should not be called if `autoConnect: true`, as this will cause all event handlers to get registered/fired twice. See [Issue #33](https://github.com/rikulo/socket.io-client-dart/issues/33).
+
+### Update the extra headers
+```
+Socket socket = ... // Create socket.
+socket.io.options['extraHeaders'] = {'foo': 'bar'}; // Update the extra headers.
+socket.io..disconnect()..connect(); // Reconnect the socket manually.
+```
+
+### Emit with acknowledgement
+```
+Socket socket = ... // Create socket.
+socket.on('connect', (_) {
+    print('connect');
+    socket.emitWithAck('msg', 'init', ack: (data) {
+        print('ack $data') ;
+        if (data != null) {
+          print('from server $data');
+        } else {
+          print("Null") ;
+        }
+    });
+});
+```
+
+### Socket connection events
+These events can be listened on.
+```
+const List EVENTS = [
+  'connect',
+  'connect_error',
+  'connect_timeout',
+  'connecting',
+  'disconnect',
+  'error',
+  'reconnect',
+  'reconnect_attempt',
+  'reconnect_failed',
+  'reconnect_error',
+  'reconnecting',
+  'ping',
+  'pong'
+];
+
+// Replace 'connect' with any of the above events.
+socket.on('connect', (_) {
+    print('connect');
+}
+```
+
+### Acknowledge with the socket server that an event has been received.
+```
+socket.on('eventName', (data) {
+    final dataList = data as List;
+    final ack = dataList.last as Function;
+    ack(null);
+});
+```
+    
 ## Usage (Flutter)
 In Flutter env. it only works with `dart:io` websocket, not with `dart:html` websocket, so in this case
 you have to add `'transports': ['websocket']` when creates the socket instance.

pubspec.yaml

@@ -1,6 +1,6 @@
 name: socket_io_client
 description: Dartlang port of socket.io-client for web, flutter, dartvm to use
-version: 0.9.7+2
+version: 0.9.8
 author: jumperchen <[email protected]>
 homepage: https://www.zkoss.org
 repository: https://github.com/rikulo/socket.io-client-dart