遇到的问题

1.Failed to extract git version from ' git --version ' xcrun: error: invalid active developer path：

解决方案：https://www.jianshu.com/p/e254e0f356f3
一些解决过程中搜到的比较好的资料：
https://www.cnblogs.com/ningmengcao-ios/p/5882505.html
https://blog.csdn.net/li_201207001/article/details/52538687
https://blog.csdn.net/u013822374/article/details/49404777

2.pod install 太慢

方案：https://blog.csdn.net/wuquan0625/article/details/47401235

3.pod第三方库报错

https://www.jianshu.com/p/0e3421961db4

4.cocoapods导入第三方库提示RPC failed curl 18 transfer

https://www.jianshu.com/p/df4ce8da99c6