test: validate json

Closes #2

Author: AndersDJohnson

package.json

@@ -4,13 +4,16 @@
   "description": "List of conventional commit types.",
   "main": "index.json",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "json -f index.json"
   },
   "keywords": [],
   "author": "Anders D. Johnson <[email protected]> (https://andrz.me/)",
   "license": "ISC",
   "repository": {
     "type": "git",
     "url": "https://github.com/AndersDJohnson/conventional-commit-types.git"
+  },
+  "devDependencies": {
+    "json": "^9.0.4"
   }
 }