Unit tests for helper.js

[saurabhdaware]

Need to write Unit tests for lib/helper.js

You can check out #27 for example.

We currently use Mocha and Chai for unit testing

[Bam92]

Hi!

Do you need any help with this? Let's me know.

[saurabhdaware]

Hi @Bam92, Yes I still need help with this

[Bam92]

I'll try to work on and submit a PR in the coming days.