title: karma configuration to disable headless chrome and use only terminal
body: <p>I am trying to run Angular unit test. I want to configure karma.config file not to open headless chrome. Simply I want to see output in terminal alone.</p>
  
  <p>I tried by commenting below code lines in <strong>karma.config</strong>....</p>
  
  <pre><code>reporters: ['progress', 'kjhtml'],
      port: 9876,
      colors: true,
      logLevel: config.LOG_INFO,
      autoWatch: true,
      browsers: ['Chrome'],
      singleRun: false
  
  reporters: ['progress', 'kjhtml'],
      port: 9876,
      colors: true,
      logLevel: config.LOG_INFO,
      autoWatch: true,
      browsers: ['Chrome'],
      singleRun: false
  </code></pre>
  
  <p>running test should not open headless chrome</p>