minor #843 Adding missed post-install-cmd script section (atamansv)

This PR was merged into the master branch.

Discussion
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Adding missed post-install-cmd script section

Adding missed post-install-cmd/post-update-cmd under script section in composer.json
Fixes #842

Commits
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92625a2 Adding missed post-install-cmd script section

Author: javiereguiluz

composer.json

@@ -66,7 +66,13 @@
             "cache:clear": "symfony-cmd",
             "assets:install --symlink --relative %PUBLIC_DIR%": "symfony-cmd",
             "security-checker security:check": "script"
-        }
+        },
+        "post-install-cmd": [
+            "@auto-scripts"
+        ],
+        "post-update-cmd": [
+            "@auto-scripts"
+        ]
     },
     "conflict": {
         "symfony/symfony": "*"