Capstone - expected value in server test

[asbates]

In the API section, the known value for the server test (test-server.js) is

expected = {
      minYear: 1979,
      maxYear: 2000,
      count: 10
    }

I think it should be

expected = {
        year_low: 1979,
        year_high: 2000,
        record_count: 10
    }

so that the keys match with what DataManager.getSurveyStats() returns. Otherwise, the test fails (at least for me).

Happy to submit a PR if desired.