Bug fix for missing repository

composer.json

@@ -27,6 +27,19 @@
     {
       "type": "composer",
       "url": "https://packages.drupal.org/8"
+    },
+    {
+      "type": "package",
+      "package": {
+        "name": "ckeditorplugin/codesnippet",
+        "type": "drupal-library",
+        "version": "master",
+        "dist": {
+          "type": "zip",
+          "url": "http://download.ckeditor.com/codesnippet/releases/codesnippet_4.5.11.zip",
+          "reference": "master"
+        }
+      }
     }
   ],
   "require": {