#166467420 Add Coverage Script to package.json

[Chiagozielam]

What does this PR do?

• add coverage script for travis ci to package.json

Description of Task to be completed?

• update package.json with the coverage script

How should this be manually tested?

• check if the the coverage in the github repo is updated after each successful run test

What are the relevant pivotal tracker stories?

#166467420

[ebenezerdon]

Hi @Chiagozielam , in your PR description, your Pivotal tracker story should be a link. There's no need to delete the existing link there, just add your id after the first # and after the last slash. Check out my PRs for clarification.

[Chiagozielam]

would you please give me the link again?

[ebenezerdon]

would you please give me the link again?

[#your-id-here](https://www.pivotaltracker.com/story/show/your-id-here)