Fixed example program and remove debugging

Author: loint

README.md

@@ -11,13 +11,12 @@ client.authenticate({
       "osVersion": "1234",
       "ipAddress": "127.0.0.1"
 });
-client.onConnection(() {
-    client.on("UserAuthSignIn", (Message message) {
-    print(message.serialize());
+client.onConnection(() async {
+    client.on("UserAuthSignIn", (Message message) async {
     expect("UserAuthSignIn", equals(message.event));
     expect('{"status": "OK"}', equals(message.message));
     });
-    client.send("UserAuthSignIn", {});
+    await client.emit("UserAuthSignIn", {});
 });
 await client.connect();
 ```

test/src/client_test.dart

@@ -41,7 +41,6 @@ void main() {
     });
     client.onConnection(() async {
       client.on("UserAuthSignIn", (Message message) async {
-        print('::UserAuthSignIn');
         expect("UserAuthSignIn", equals(message.event));
         expect('{"status": "OK"}', equals(message.message));
       });