Error fetching https://ruby.taob

安装 Cocoapods 的时候出现的错误错误信息,如下图.

Error fetching https://ruby.taobao.org/:
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (https://ruby.taobao.org/specs.4.8.gz)

即将 gem sources -a https://ruby.taobao.org/

换成
gem sources -a http://gems.ruby-china.org/