Morteza/add_dart_demo

_includes/demos/dart.dart

@@ -0,0 +1,26 @@
+import 'dart:async' show Future;
+import 'dart:convert' show json;
+import 'dart:io' show WebSocket;
+
+Future<void> main() async {
+    WebSocket ws;
+    try {
+        ws = await WebSocket.connect(
+                'wss://ws.binaryws.com/websockets/v3?app_id=1089');
+
+        if (ws?.readyState == WebSocket.open) {
+            ws.listen(
+                    (resposne) {
+                        var data = Map<String, dynamic>.from(json.decode(resposne));
+                        print('Ticks update:\r\n $data');
+                    },
+                    onDone: () => print('Done!'),
+                    onError: (e) => throw new Exception(e),
+            );
+            ws.add(json.encode({'ticks': 'R_100'}));
+        }
+    } catch(e) {
+        ws?.close();
+        print('Error: $e');
+    }
+}

_pages/demos.html

@@ -11,6 +11,7 @@ <h1 class="post-title">{{ page.title }}</h1>
         <option value="clojure">Clojure</option>
         <option value="coffeescript">CoffeeScript</option>
         <option value="csharp">C#</option>
+        <option value="dart">Dart</option>
         <option value="elixir">Elixir</option>
         <option value="go">Go</option>
         <option value="perl">Perl</option>
@@ -31,6 +32,7 @@ <h1 class="post-title">{{ page.title }}</h1>
     <pre data-language="clojure">{% include demos/clojure.clj %}</pre>
     <pre data-language="coffeescript">{% include demos/coffeescript.coffee %}</pre>
     <pre data-language="csharp">{% include demos/csharp.cs %}</pre>
+    <pre data-language="dart">{% include demos/dart.dart %}</pre>
     <pre data-language="elixir">{% include demos/elixir.exs %}</pre>
     <pre data-language="go">{% include demos/go.go %}</pre>
     <pre data-language="java">{% include demos/java.java %}</pre>