Updates to Fix broken tutorial

[kdthanvi]

1. Major updates in winston 3.X, needs to update the logger code (or just by using version specific npm install).
2. To deploy using now CLI OR Heroku CLI, start (or now-start for now CLI) script should be present in package.json .
3. Just a missing ( bracket.

[rohullah001]

48c27ba26ba7d36e-80eccf90bac4e1e2-fdd381bd58fbf2d5

[codelinker]

Thank you! Works like a charm now!