Merge pull request #28 from Rise-Vision/chore/resolve-jshint-errors

Resolve JSHint errors
UI review changes

* Use same padding and margins as the Gadget
* Add border between days
* Move CSS to external file
Merge pull request #29 from Rise-Vision/chore/ui-review

UI review changes
e2e and unit testing

* Configure project for e2e & unit tests
* Create Google Calendar API mock
* Expect to receive multiple parameters back when requesting
`additionalParams`
Merge branch 'chore/e2e-tests' of https://github.com/Rise-Vision/widget-google-calendar into chore/e2e-tests