Summary:
Also see:
3a33b0ad64
which was hot-pushed to master in order to get Travis building.
We now have two travis files:
1. /.travis.yml
2. /packages/client-app/travis.yml
The first one is alwas in the private repo and runs `npm install && npm
run build-client`. This decrypts our keys and signs, builds, and uploads
to S3.
The second one is designed to live in our yet-to-be public mirror. It will
basically just run `npm install && npm test`.
That way the public one should just about ALWAYS pass (YAY!) except of
course when you break the tests or something in the installer!
Test Plan: Run on new https://travis-ci.com/nylas/nylas-mail-all
Reviewers: jerm, spang, juan
Reviewed By: spang, juan
Differential Revision: https://phab.nylas.com/D3999
