2.27.2太老 部分电脑安装不了 允许向上兼容版本

package.json

@@ -59,7 +59,7 @@
     "babel-preset-stage-2": "6.22.0",
     "babel-register": "6.22.0",
     "chalk": "2.3.0",
-    "chromedriver": "2.27.2",
+    "chromedriver": "^2.27.2",
     "copy-webpack-plugin": "4.0.1",
     "cross-spawn": "5.0.1",
     "css-loader": "0.28.0",