Turn ContactImporter into ES6 class

[sethetter]

Also add sendgrid as a dependency so the test will run and pass.

Resolves #532

[SendGridDX]

All committers have signed the CLA.

[rafaelverger]

Why?

[sethetter]

The test file uses sendgrid, but it wasn't in the file. This was required to get it to run and pass.

[rafaelverger]

I would also add this script shortcut in main package json:

{
  // ...
  scripts: {
    // ... 
    "test:contact": "babel-node ./node_modules/istanbul/lib/cli cover ./node_modules/mocha/bin/_mocha \"packages/contact-importer/**/*.spec.js\"",
  }
}

[sethetter]

Good call, I'll get that added shortly.

[sethetter]

@rafaelverger ready for another review!

[rafaelverger]

All of them make sense to me... @mbernier ?

[mbernier]

This is awesome!! Thank you @sethetter and @rafaelverger -- SO AWESOME seeing you guys take this one on. Thank you Thank you Thank you!!

[thinkingserious]

Hello @sethetter and @rafaelverger ,

Thanks again for the PR!

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Team SendGrid DX

[sethetter]

@mbernier @thinkingserious thank you both! Happy to contribute. Thanks @rafaelverger for the review!