Update catalogue.json

catalogue.json

@@ -13,6 +13,17 @@
             ],
             "updated_at": "2020-02-14T10:57:50.673Z",
             "url": "http://https://dev.nexpie.com/node-red/node-nexpie"
+        },
+        {
+            "id": "node-merge-image",
+            "version": "1.0.0",
+            "description": "Node-RED module for NEXPIE and NEXPIE compatible platform",
+            "keywords": [
+                "image",
+                "merge"
+            ],
+            "updated_at": "2020-05-05T00:00:50.673Z",
+            "url": "https://dev.nexpie.com/node-red/node-merge-image"
         }
     ]
 }
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