cocoapods的安装 遇到 Error installing pods:activesupport requires Ruby version >=2.2.2
参考博客地址如下:1:http://blog.csdn.net/lissdy/article/details/91913512:http://www.cnblogs.com/yan520/p/5583362.html3:http://www.jianshu.com/p/6e5c0f78200a(终极版)http://blog.csdn.net/showhilllee/article/details