fix(test): added successful empty run in package json

Author: StephanGerbeth

packages/observables/package.json

@@ -7,7 +7,7 @@
   "main": "index.js",
   "devDependencies": {},
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 0"
   },
   "author": "",
   "license": "MIT"