Merge pull request #32 from pdsinterop/feature/wss

remove websocket requirement, we only provide an interface now.

Author: ylebre

composer.json

@@ -26,8 +26,7 @@
     "pdsinterop/flysystem-rdf": "^0.6",
     "pietercolpaert/hardf": "^0.3",
     "psr/http-factory": "^1.0",
-    "psr/http-message": "^1.0",
-    "textalk/websocket": "^1.5"
+    "psr/http-message": "^1.0"
   },
   "scripts": {
     "dev:example": "php -S localhost:${PORT:-8080} -t ./src/ ./src/example.php",