add keyword in package.json

Author: CodeWithSouma

package.json

@@ -15,6 +15,10 @@
     "lodash": "^4.17.19",
     "mongoose": "^5.9.28"
   },
+  "keywords": [
+    "example",
+    "heroku"
+  ],
   "engines": {
     "node": "12.18.2"
   }