code: function karmaServedFiles(ngVersion) {
    // Returns necessary files for a specific version of angular
    function angular(version) {
      console.log('Using Angular ' + ngVersion + ' from test/angular/' + version + '/angular.js');
  
      return [
        'test/angular/' + version + '/angular.js',
        'test/angular/' + version + '/angular-mocks.js',
        'test/angular/' + version + '/angular-animate.js',
      ];
    }
  
    var angularFiles = angular(ngVersion).map(function(pattern) {
      return { watched: false, included: true, nocache: true, pattern: pattern };
    });
  
    return angularFiles.concat('test/index.js');
  }
docs: This returns a Karma 'files configuration'.
  http://karma-runner.github.io/0.8/config/files.html
  
  Specifies which files can be served by the Karma web server
  
  included: true -- files that are always served to the browser (like <script> tag)
  included: false -- files *available to be served* by karma, for instance via require()