安装Protractor + Cucumber

1. 安装Node.js

2.npm install -g protractor

3. webdriver-manager update

4. webdriver-manager start, 结果报错如下，发现自己的JDK是7.0的，于是更换 8.0

5. npm install -g cucumber

6. npm install --save-dev protractor-cucumber-framework

6.1. try to fix the ENOENT warning with following command:

6.2 Try to fix the require the peer :

7. webdriver-manager start