message: Improve CI reporting
  The summary reporter doesn't show any details about test failures.
  This adds back the  spec reporter but configures it to suppress output about failed tests.
diff: @@ -74,7 +74,11 @@ module.exports = function(config) {
  retryLimit: 5,
  - reporters: ['summary', 'junit'],
  + reporters: ['spec', 'summary', 'junit'],
  +
  + specReporter: {
  + suppressPassed: true
  + },
  browsers: ['PhantomJS'].concat(Object.keys(customLaunchers)),
  