Added node schedule to run crawler and notification service

package.json

@@ -7,8 +7,6 @@
     "test": "echo \"Error: no test specified\" && exit 1",
     "start": "node ./index.js",
     "start-mon": "nodemon ./index.js",
-    "crawler": "node ./app/services/crawlerService.js",
-    "notification": "node ./app/services/notificationService.js",
     "migrate": "cd app && npx sequelize db:migrate",
     "setup": "docker build -t marketalerts .  && docker run -e POSTGRES_USER=docker -e POSTGRES_PASSWORD=docker -e POSTGRES_DB=marketalerts --name pg_marketalerts -d -p 5432:5432 marketalerts && sleep 4 && npm run migrate",
     "docker-start": "docker start pg_marketalerts",
@@ -36,10 +34,11 @@
     "express-ejs-layouts": "^2.5.0",
     "express-layout": "^0.1.0",
     "node-fetch": "^2.3.0",
+    "node-schedule": "^1.3.2",
     "pg": "^7.10.0",
     "react-step-wizard": "^5.1.0",
     "sequelize": "^4.43.2",
-    "sequelize-cli": "^5.4.0"
+    "sequelize-cli": "^5.5.0"
   },
   "devDependencies": {
     "nodemon": "^1.19.0"