code: function(configFile, customOptions) {
      var options = { configFile: configFile, singleRun: true };
      var travisOptions = process.env.TRAVIS && {
        browsers: ['Chrome', 'Firefox'],
        reporters: ['dots', 'coverage', 'coveralls'],
        preprocessors: { 'src/*.js': ['coverage'] },
        coverageReporter: {
          reporters: [{
            type: 'text'
          }, {
            type: 'lcov',
            dir: 'coverage/'
          }]
        },
      };
      return grunt.util._.extend(options, customOptions, travisOptions);
    }
docs: HACK TO MAKE TRAVIS WORK