BUGFIX: Complement required packages

Author: gerhard-boden

composer.json

@@ -3,7 +3,9 @@
     "type": "neos-package",
     "description": "Plugin for search integration via content node",
     "require": {
-        "typo3/flow": "~4.0 || dev-master"
+        "typo3/flow": "~4.0 || dev-master",
+        "flowpack/elasticsearch": "~2.0 || dev-master",
+        "neos/content-repository-search": "~3.0 || dev-master"
     },
     "autoload": {
         "psr-4": {