Add RandomData (#300)

Author: polyfloyd

directory.json

@@ -168,6 +168,7 @@
   "Port39": "https://port39.de/spaceapi.json",
   "Post Tenebras Lab": "https://www.posttenebraslab.ch/status/status.json",
   "Programvareverkstedet": "https://www.pvv.ntnu.no/spaceapi.php",
+  "RandomData": "https://randomdata.sandervankasteel.nl/index.json",
   "RaumZeitLabor": "https://status.raumzeitlabor.de/api/spaceapi.json",
   "Reaktor 23": "https://spaceapi.reaktor23.org",
   "Recompile": "http://www.recompile.se/spaceapi",