message: log when using external chrome!
diff: @@ -36,7 +36,9 @@ async function runTests() {
  console.log("running tests ...");
  const options = {};
  if (process.env.CHROME_PATH) {
  - options.executablePath = process.env.CHROME_PATH;
  + const path = process.env.CHROME_PATH;
  + console.log(`(using external chrome/chromium at ${path}, make sure it's compatible with puppeteer)`);
  + options.executablePath = path;
  }
  global.browser = await puppeteer.launch(options);
  const page = await helpers.newPage();
  