write tests

Need to create tests (Travis CI?) to test this so I'm not manually testing.

Expected diff:

```
Added /tests/test.js #mocha or casper script to run phantomjs or selenium tests against the staging CA
Added /.travis.yml #added for travis-ci integration
Modified /README.md #updated to include the travis-ci badge
```

The issue names /tests/test.js, /.travis.yml, and /README.md. Start by checking how tests are currently run and how the staging CA can be exercised, then define the Mocha or Casper/PhantomJS/Selenium test command and Travis integration. Done means automated tests run against staging, Travis is configured, and README carries the badge.

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