Update package.json

Author: hzoo

package.json

@@ -9,7 +9,8 @@
     "chrome-webstore-upload-cli": "^1.0.3"
   },
   "scripts": {
-    "release": "./node_modules/.bin/webstore upload --source=src --auto-publish"
+    "release": "./node_modules/.bin/webstore upload --source=src --auto-publish",
+    "test": "echo \"Error: no test specified\""
   },
   "repository": {
     "type": "git",