Fullpage version 3 has changed its license to GPLv3 and it requires a licenseKey

控制台报错 Fullpage.js version 3 has changed its license to GPLv3 and it requires a licenseKey option. Read about it here:
```
Fullpage.js version 3 has changed its license to GPLv3 and it requires a `licenseKey` option. Read about it here
```

若引用的是 fullPage.js，就在 fullPage.js 文件中搜索：licenseKey，将以下 if 花括号中的代码删除即可，没有任何影响：

if(!isOK){
    showError('error', 'Fullpage.js version 3 has changed its license to GPLv3 and it requires a `licenseKey` option. Read about it here:');
    showError('error', 'https://github.com/alvarotrigo/fullPage.js#options');
}

移除前：

移除后：

若引用的是 fullPage.min.js，就在 fullPage.min.js 文件中搜索：报错内容
```
Fullpage.js version 3 has changed its license to GPLv3 and it requires a `licenseKey` option. Read about it here
```
然后找到代码位置

将这个方法 bn() 中的报错代码删除

还有个 https://github.com/alvarotrigo/fullPage.js#options 错误也一样，删除完成之后就是这样 (bn(),bn())，然后保存就可以了