Merge branch 'doc-test'

README.md

@@ -86,5 +86,5 @@ class MyChat implements MessageComponentInterface {
     // Then some JavaScript in the browser:
     var conn = new WebSocket('ws://localhost:8080/echo');
     conn.onmessage = function(e) { console.log(e.data); };
-    conn.send('Hello Me!');
+    conn.onopen = function(e) { conn.send('Hello Me!'); };
-```
+```

composer.json

@@ -29,4 +29,7 @@
       , "symfony/http-foundation": "^2.2|^3.0"
       , "symfony/routing": "^2.2|^3.0"
     }
+  , "require-dev": {
+        "phpunit/phpunit": "~4.8"
+    }
 }