message: Update package.json
  fixed testcafe command
diff: "serve": "live-server --port=7777",
  "test": "karma start",
  "testsingle": "karma start --single-run",
  - "testcafe": "concurrently \"http-server\" \"testcafe chrome testCafe/questions/matrix.js\"",
  + "testcafe": "concurrently \"http-server\" \"testcafe chrome testCafe/\"",
  "testcafe_sauce": "testcafe \"saucelabs:Chrome@56.0:Windows 10\" testCafe/",
  "release": "standard-version --message \"Release: %s\" ",
  "build_knockout_dev": "webpack --env.buildType dev --env.platform knockout",
  