问题：
安装cocoaPods失败
sudo gem install cocoapod
报错：【提示：ERROR: Error installing cocoapods: ERROR: Failed to build gem native extension.】
百度发现可能ruby版本问题
rvm -v
报错：-bash: rvm: command not found
安装ruby:
\curl -sSL https://get.rvm.io | bash -s stable --ruby
报错：
curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
解决：
1.通过地址https://blog.csdn.net/qq_43531694/article/details/106862753
方式一解决ruby安装问题完成安装
2.执行 source /Users/当前账户名/.rvm/scripts/rvm启动rvm
3.执行安装cocoapods 命令sudo gem install cocoapods 完成安装；